Midweek Review
Transmission modes of COVID-19
By Prof.Kirthi Tennakone,
National Institute of Fundamental Studies
(ktenna@yahoo.co.uk)
In the late 1850s Louis Pasteur discovered organisms seen only through a microscope cause putrefaction of dead biological materials and also infectious diseases. On the basis of these findings, the medical profession at the time concluded; when people get exposed to decaying organic matter, microbes therein gain access to human body, making them sick. Their excrements carrying the pathogen also transfer the disease to others. Later on it became clear a specific types of microbes latently established in the community or in animal reservoirs are responsible for each infectious disease. Sometimes they flare-up, transmitting from one host to another, resulting in an epidemic. When the community acquires herd immunity, the disease wane and move to another location, or reappear at the same place later. Rarely a microorganism, naturally associated with an animal, jumps to a human and after genetic alterations develops into a contagious illness. Most of the existing infectious diseases are believed to have originated by the above evolutionary process. The genetic material of the coronavirus (SARS-CoV-2) resemble those of viruses present in some species of bats, but definitive evidence is not available to determine how it passed to humans.
Depending on the nature of the infectious agent and symptoms caused by its invasion to the human body, diseases spread via one or several of different modes. Notably; direct or indirect exposure to body fluids, food or water contaminated with excretions of the sick, pathogen released to air or mediation of another living organism (vector).
Pathogens evolve to optimize the mode of transmission to proliferate and survive, but not to exterminate the host. Propensity of evolution via genetic changes is higher in the case of viruses, notably those based on RNA. More the virus replicate by infecting a larger population, chances of popping up variants increase proportionately.
Respiratory transmission of
infectious diseases
One of the most effectual modes of disseminating an infection is releasing the pathogen into the air in coughing, sneezing, talking or exhalation. Here, germs enter into the bodies of other people during inhalation, deposition on lips, nostrils, eyes or skin. Those deposited on surrounding objects sometimes contaminate hands and may subsequently enter the mouth. Apart from COVID-19, quite a number of most contagious viral and bacterial diseases spread by the airborne route. These include viral diseases; common cold, influenza, measles, mumps, chicken pox, viral meningitis and bacterial diseases; tuberculosis, diphtheria, whooping cough and anthrax. Lungs and the respiratory tract are more susceptible to intrusion by germs compared to the gastrointestinal tract, because the acidity of the latter resist foreign organisms.
Airborne diseases are hardest to control, because of the high probability of transmission through an all-pervading invisible medium and prohibitive difficulty of sterilizing large volumes of air.
The direct respiratory transmission of a pathogen proceeds via two aerodynamical mechanisms; droplet transmission and aerosol transmission, the latter is also referred to as airborne transmission.
Droplet Transmission
When an infected person cough, sneeze, speak or exhale deeply, ejected fluid droplets disperse into air. These droplets constituted largely of water, enclose mucus and the pathogen. With the initial velocity imparted, droplets propel forward and begin to fall owing to gravity, following a curved trajectory.
At school, we learn that all falling objects; irrespective of mass and size, moves with continuously increasing speed at a constant acceleration of approximately 10 meters per second. This is in absence of air resistance, negligible compared to gravitational force for heavy objects. Situation differs in the case of small particles, where air resistance is comparatively important. As shown by Irish physicist George Stokes, falling spherical particles encounter a breaking force proportional to the velocity. Consequently they accelerate for very short time and thereafter fall down with a uniform speed proportional to the square of the radius. Thus larger droplets, those greater than 5-10 micrometers (1micrometer = 1/1000 of a millimeter) fall rapidly and reach the ground after propelling a short distance of about 1-2 meters. Only those persons within this range get exposed to larger droplets. Smaller droplets fall further or remain airborne and floats around.
Particles floating in air without settling down to the ground are known as aerosols.
Water in respiratory droplets evaporate, converting sizable ones to smaller entities; more likely to be transported as aerosols. Sometimes water evaporates completely producing nuclei carrying the pathogen. Nuclei being lighter remain afloat longer. Evaporation depends on relative humidity and ambient temperature.
The genius scientist and engineer William F. Wells working in Baltimore hospital, United States, in 1934 was the first to analyze theoretically the respiratory transmission of infections, distinguishing droplet and aerosol modes.
Aerosol Transmission
Smaller droplets (less than 5-10 micrometers and sometimes even larger), those reduced to similar sizes by evaporation of the water content and droplet nuclei resulting from drying-up of droplets remain suspended in air without falling to the ground. They can be carried long distances exceeding 10 meters by air currents or accumulate in poorly ventilated spaces. Evaporation to dryness could inactivate pathogen and many viruses and bacteria seem to have evolved strategies to circumvent this problem – possibly the residue mucus help to preserve them live.
To prove the aerosol hypothesis, William Wells vented air from a tuberculosis ward in Baltimore hospital to a compartment where Guinea pigs were nourished. He observed about 3 percent of the animals contracted tuberculosis. Examination of the lesions in lungs revealed they have originated by deposition very few bacilli each time; further supporting the aerosol hypothesis. Aerosols being minute, each carry very few microbes. In another experiment Wells irradiated air from the tuberculosis ward with ultraviolet light before venting to the Guinea pig cage. Here none of the pigs developed the disease, confirming germs originated from the ward.
Today we describe tuberculosis as an archetypal example of a respiratory disease communicated by aerosols. Measles and chickenpox also spread predominantly via aerosol route.
Despite the seminal work of W.G. Wells, medical texts continued to emphasize most respiratory infections including common cold and influenza transmits via droplet mechanism. For this reason the COVID-19 virus was assumed to transmit primarily via droplets and preventive measures were recommended accordingly.
Although scientists continued to insist COVID-19 virus could communicate via aerosols; World Health Organization (WHO) and Center for Disease Control and Prevention (CDC), United States and several other leading health care authorities did not acknowledge airborne transmission. About a month ago, all these organizations revised their websites making statements to the effect that COVID-19 could also be transmitted by aerosols.
At shorter distances (2-3 meters), both droplets and aerosols pass on coronavirus. Whereas at longer distances (especially unventilated situations) aerosols play a predominant role.
There exist reasons to suspect aerosol communicated illness is more virulent. In droplet mechanism, the virus lands on the nasal region of the respiratory passage gradually proliferating downwards in the respiratory tract. Whereas aerosols can reach the lungs directly, causing acute respiratory complications instantly. Possibly when virus is first introduced into the upper respiratory tract by droplets, the local infection there induce some immunity before it reaches the lungs – suggesting aerosol communicated infection is more virulent.
COVID Transmission modes and control measures
Decisions regarding what measures to be adopted in controlling an infectious disease necessitates gaining an understanding of the nature of the causative agent and how it is transmitted. For diseases known to have existed for long periods of time, requisite information is readily available permitting immediate intervention. When COVID-19 surfaced it was a new disease not known to have existed previously. Modern science was quick to ascertain the genotype (complete genetic information of an organism) and phenotype of the virus (actually observed characteristics of an organism) and pathology of the disease – information essential design vaccines and curative medicines.
Finding how the virus spreads poses more challenges, especially when there are more than one possible modes of transmission. Here it is important to determine the relative weightage of each mode. In absence of detailed information regarding modes of transmission, droplet mechanism was assumed; because common viral respiratory diseases are considered to pass via this avenue. Accordingly, preventive measures recommended were; social distancing, limiting mobility, wearing masks and sanitization of the hand as well as surfaces likely to be contaminated by the deposit of droplets.
Even in situations where aerosol transmission turns out be more likely, it is imperative, the measures recommended for the droplet mode are strictly followed. However, additional safeguards needs to be imposed when aerosols poses a threat. Aerosols travel longer distance from the source and could diffuse throughout a closed space or carried further by air currents. Masks one wears has to be the type that filters aerosols and tight fitting to avoid aspiration of air from the gaps during inhalation. The risk of aerosol transmitted infection is vastly higher in poorly ventilated indoor environments.
In outdoors situations aerosol transmission is minimal provided social distancing (about 2-3 meters) is strictly maintained while wearing masks, as aerosols diffuse fast. However open markets cannot be considered as outdoor owing to poor circulation. Here additional precautions are necessary to avoid overcrowding.
Superspreading of COVID-19
In many instances a good number of people gathered in markets, shops, malls and auditoriums or enclosed workplaces have contracted COVID-19, presumed to be infected by one identified carrier. All individuals who contracted the infection were most unlikely to have encountered the carrier at 1-2 meter distance. Obvious conclusion would be, the virus had been in air and many have breathed it. Experiments indicate virus could survive in aerosols several hours. Poor ventilation, improper air-conditioning and air recycling accumulate aerosols. An infected individual identified to have created a big cluster is sometimes referred to as a superspreader. However, it does not necessarily imply the subject shreds more of the virus. Often the cause of extensive spread had been the nature of an event or the environment where people gathered and participated. In a large congregate, one carrier moving around could contaminate breathing air with germs harbored aerosols to lethal proportions, if the ventilation is inadequate. Imagine the extent of transmission in such situations, when there are several carriers!
A peculiarity of the COVID-19 pandemic: over-dispersion of the basic reproduction number
The present pandemic is peculiar in terms of a concept in mathematical epidemiology referred to as over-dispersion of the basic reproduction number. Basic reproduction number (R0) refers to the average of number of new cases generated by one carrier of the pathogen. For COVID 19 value of R0 is generally a number around 2. It is an average, if we take R0 as 2; it does not mean every infected person reproduce 2 others. The value of R0 could fluctuate randomly or follow an identifiable non-random pattern to yield an average of 2. Statistics of corona virus cases points to the latter.
A larger percentage of infected persons may not pass the disease to anyone, but if each in a smaller percentage of carriers, under special circumstances; infect numbers very much greater than 2, you still would obtain an average of 2. This is exactly the pattern observed in COVID-19 – about 75 percent of the infected persons do not pass disease to others! The flu of 1918 which caused a major calamity also had a basic reproduction number of about 2. Here, contrastingly; 40 percent did not cause secondary infections. Mathematicians measure this difference in terms of another parameter known as the over-dispersion factor denoted by K. The value of K for COVID-19 and the 1918 flu are 0.1 and 1 respectively. A small value of K implies a large percentage of infected persons rarely pass the disease to others, while a small percentage aggressively and sporadically fuel the epidemic.
In Sri Lanka and elsewhere the COVID-19 epidemic progressed mainly as clusters appearing spatially and temporally. The low over-dispersion factor of the present pandemic testifies cluster effect.
If causes are understood and actions taken to alleviate them, low over-dispersion can be advantageously exploited to mitigate the pandemic. A small value for K, means; rare situations congregating people, trigger the pandemic. If they are identified and eliminated, pandemic will dwindle and disappear allowing time for vaccinations secure long term safety and suppress breeding of variants.
The over-dispersion of basic reproduction number of the present pandemic imply that in respiratory transmission of the coronavirus ; it does not significantly distribute via random association of infected and susceptible individuals, but largely by a small set of noticeable social situations and therefore in principle, suppressible by community efforts to follow preventive measures. The pandemic may be suppressed by curtailing events and situations leading to breeding of clusters without restricting routine and other activities essential to drive the economy.
Many epidemiologists believe one of the main causes of low value of K is a direct consequence aerosol transmission under circumstances favorable to their accumulation – especially events and situation that congregate people.
Low dispersion of the basic reproduction number is also advantageous to the virus to resist the pressure of herd immunity. Even if a large fraction of a population is vaccinated, a local situation favorable for super-spreading could create a cluster.
Flu pandemic of 1918 fizzled out completely in 2.5 to 3 years, presumably because of the much higher value of K and rapid acquisition of herd immunity by exposure to the pathogen. Apart from distinctions in the viruses and their pathologies; a noteworthy difference of 1918 pandemic and COVID-19 are: smaller population densities, less human mobility and rarity of super spreading situations and events in the former.
Since the emergence of the COVID-19 epidemic in China, world learned so much about the disease. Yet, there are unknowns; especially finer details of how it propagates and how to cure it. The complex phenomenon of COVID-19 spreading cannot be understood entirely in terms of two numbers R0 and K – although these quantities have provided valuable insights.
We know for certain corona virus can be suppressed by control measures and vaccination. It is the duty of every citizen, community and nation to strictly abide by rules of prevention until vaccines are rolled out and appropriately thereafter.
Midweek Review
22A: Competing Opposition parties in dilemma
Silent petty backbiting among Opposition may result in it grabbing defeat from victory over NPP
There is no likelihood of the SJB and the UNP reaching consensus on a tangible arrangement in the near future though some asserted that they may agree on a united front against the ruling National People’s Power (NPP). Referring to
former President and UNP leader Ranil Wickremesinghe’s visit to Opposition Leader Sajith Premadasa’s Office on 23 July, a source familiar with the developments said that in spite of such gestures, underlying problems remain. Another source explained that a combined front may be useful in a campaign against a particular issue but the two parties needed a genuine arrangement ahead of the next countrywide election.
By Shamindra Ferdinando
United Republican Front (URF) leader Patali Champika Ranawaka recently thanked Health and Media Minister Dr. Nalinda Jayathissa for recognising the Janathawadi Joint Opposition as a real challenge to the National People’s Power (NPP) government. The NPP enjoys an unassailable 159 parliamentary seats.
The former Minister noted that Dr. Jayathissa, who is also the Cabinet spokesman, realised the political threat posed by them, though the main parliamentary Opposition party Samagi Jana Balawegaya consisted of 40 lawmakers.
Ranawaka refrained from naming the SJB as the main Opposition party he was referring to.
Addressing the media at the Flower Road Office of UNP leader Ranil Wickremesinghe, Ranawaka pointed out that the ruling party felt their challenge, though there were a plethora of Opposition parties in the Parliament.
Referring to Dr. Jayathissa’s recent accusation that they conspired at the Kirula Place, Colombo 5, residence of former External Affairs Minister Prof. G. L Peiris, Ranawaka appreciated the Minister’s declaration made at the expense of the SJB.
While the 40-member SJB group is the second largest group in Parliament, the Illankai Thamil Arasu Kadchi (ITAK) holds third position with eight seats whereas New Democratic Front (NDF) consists of five MPs. The NDF, that received the backing of Wickremesinghe at the 2024 parliamentary polls, is in fourth position, whereas the Sri Lanka Podujana Peramuna (SLPP) parliamentary group consists of just three members. The SLPP suffered a humiliating defeat at the hands of the NPP at the last parliamentary polls, held in November 2024. An angry electorate at the first parliamentary polls after the 2022 regime change project reduced the SLPP, from a commanding 145-seat group, to just three MPs. Defeated 2024 presidential election candidate Namal Rajapaksa was so fearful of the impending rout at the November 2024 polls, he took refuge in the SLPP National List.
The political grouping, based at the Flower Road office of Wickremesinghe, has gradually broadened its operation. The stepping up of the Flower Road operation must be examined taking into consideration the NPP targeting Wickremesinghe over his 2023 September visit to the UK. The NPP has alleged that Wickremesinghe squandered public funds at a time the country was undergoing extreme economic difficulties. The crux of the matter is whether Wickremesinghe, in his capacity as the President, spent Rs 16.2 man on a private visit.
In spite of the Flower Road project receiving the NPP’s attention, Wickremesinghe does not really command the NDF that contested under the ‘Gas Cylinder’ symbol. The NDF group in Parliament consists of former Badulla District SLPP lawmaker Chamara Sampath Dassanayake, former Kalutara District SLPP MP Rohitha Abeygunawardena, ex-SLPP Kandy District MP Andrada Jayaratne, ex-UNP Minister Ravi Karunanayake (National List) and former SLFP Minister Fizer Mustapha (National List).
It would be pertinent to mention that a major problem erupted within the NDF at the time of filling the two National List slots. Wickremesinghe is the undisputed leader of the NDF, though he lacked any formal recognition as such, fielded candidates for selected electoral districts outside the Northern and Eastern regions at the 2024 November polls. The NDL comprised the UNP, the SLFP and the SLPP breakaway faction ‘Podujana Eksath Nidahas Peramuna (PENP).’ All three elected members Dissanayake, Abeygunawardena and Jayaratne represented the PENP.
The SLFP received one National List slot whereas the General Secretary of the NDF, Sharmila Perera, regardless of strong objections by Wickremesinghe, accommodated Karunanayake as the other NDF National List nominee. Perera informed the Election Commission, in writing, while the coalition debated Karunanayake’s appointment. An influential section of the coalition favoured the appointment of Kanchana Wijesekera, of the PENP, as the other National List member.
Perera, in her capacity as the NDF’s General Secretary, chose Karunanayake whose involvement with the NDF is in the public domain. The Election Commission gazetted a notification on 18 November, 2024, naming Karunanayake to Parliament. Will discuss the NDF’s emergence as a significant political factor in the wake of the 2010 presidential election, the first national poll after the eradication of the separatist Tamil terrorist movement.
SJB strategy
Whether the SJB likes it or not, former Yahapalana Minister Ranawaka’s reaction to Dr. Jayathissa’s conspiracy claim highlighted the ongoing controversy surrounding the main Opposition party’s overall response to the NPP’s pet project, the enactment of the 22nd Amendment.
Some political commentators have harshly criticised SJB Chief, who is also the Opposition Leader, Sajith Premadasa, for failing to mount a large-scale counter offensive. Some of them have taken offence that Premadasa sort of played it safe in spite of the NPP seeking to bulldoze the Opposition, both in and outside Parliament. Various interested parties have asserted that Premadasa’s inaction has been influenced by his fear of the government hounding him with corruption investigations, targeting him and his wife Jalani.
In spite of much publicised gathering of recognised Opposition parties/groups at the Opposition Leader’s Office at No 30, Sir Marcus Fernando Mawatha, Colombo 07, on 23 July, 2026, also attended by Wickremesinghe, the SJB appeared to have failed to take the lead in the overall campaign against the 22nd Amendment. Had the government managed to neutralise the determined efforts of the Sri Lanka Bar Association (BASL) and the unexpected United Nations intervention, the Opposition campaign may have collapsed already.
The undeniable truth is the SJB never succeeded in taking command of the overall political strategy. Dr. Jayathissa’s claim and Ranawaka’s reaction clearly suggested the deterioration of the SJB’s status. But those who approve of the SJB’s handling of political developments seem confident the party is on the right track. They feel criticism directed at the SJB and Sajith Premadasa, in particular, unfair and utterly politically motivated. Social media criticism appeared to have troubled the SJB. Recently, the SJB contradicted and challenged the opinion expressed by Priyanjith Vitharana who posted political commentaries under the pseudonym ‘Rate Rala.’ The former General Secretary of the breakaway JVP group, the National Freedom Front (NFF), has emerged as one of the strongest critics of Premadasa’s style of Opposition politics. ‘Rate Rala’ relentlessly attacked the SJB leader and vigorously questioned what he called the Opposition Leader’s lukewarm reaction to the NPP’s challenge.
The SJB and the Wickremesinghe-led political grouping cannot turn a blind eye to President Anura Kumara Dissanayake’s impending high profile political campaign, countrywide. The NPP has declared that the campaign would be launched on 5 September. The NPP enjoys absolute political power to move large groups of people for their intended meetings as previous ruling parties did. But, in the absence of a cohesive political strategy, those in the Opposition are still unable to work out a strategy to counter the NPP campaign. The Cabinet spokesman has dared Wickremesinghe’s group to bring in people onto the streets instead of having clandestine meetings at the residence of Prof. Peiris, the convenor of the Janathawadi Joint Opposition.
Wickremesinghe’s five-member NDF group in Parliament is obviously divided over political strategy. It seems the members of the group are pulling in different directions. The SLFP’s Faizer Mustapha is somewhat silent on the 22nd Amendment and the remaining members haven’t been seen playing a role against the 22nd Amendment worth mentioning. Cobbling up alliances to overcome short-term political challenges is the bane of the Sri Lankan political setup. The NDF is no exception. Having suffered an expected defeat at the 2024 September presidential poll, Wickremesinghe utilised the NDF to bring together those at the mercy of the NPP. Wickremesinghe’s move dealt a devastating blow to the SLPP, struggling to cope up with the developing situation. The consequences of Wickremesinghe post-presidential actions caused irreparable damage. The fielding of SLPP candidates on the NDF ticket and also accommodating them on its National List, at the expense of the SLPP, undermined that party. Among those who betrayed the SLPP were former Prime Minister Dinesh Gunawardena and ex-Speaker Mahinda Yapa Abeywardena. But, Wickremesinghe didn’t care. By then, the SLPP had forgotten how in its capacity as the ruling party it elected Wickremesinghe as Gotabaya Rajapaksa’s successor at the expense of their own Dullas Alahapperuma who teamed up with the SJB to fight it out in Parliament.
The SLPP fell out with Wickremesinghe when the latter sought the ruling party’s backing at the 2024 presidential polls, the first post-Aragalaya (read regime change project) national election. At the end, Sajith Premadasa, Ranil Wickremesinghe and Namal Rajapaksa contested at the expense of a unified front. That enabled Anura Kumara Dissanayake to secure victory at the 2024 presidential race.
Unrealistic SJB-UNP partnership
In the run-up to the 2024 parliamentary polls, the writer, at a Flower Road Office briefing by UNP Deputy Leader Ruwan Wijewardena, raised the failure on the part of the UNP and the SJB to reach a consensus after Dissanayake won the presidency due to their dithering.
The former Deputy Defence Minister, struggled to explain the status on the SJB-UNP talks when the writer pointed out that Dissanayake polled 5,634,915 votes whereas Sajith Premadasa (4,363,035 votes) and Ranil Wickremesinghe (2,299,767) together polled 6,662,802- a staggering 1,027,887 votes more than the winner. Unfortunately, both camps remained adamant regarding the modalities of consensus/unification. Had the two parties realised the gravity of the situation and the extraordinary challenge the NPP posed, they could have shed whatever their differences to contest under one symbol. But the petty-minded SJB and UNP leaders squandered an opportunity that resulted in the NPP securing an unbeatable 159 seats at the presidential election.
The SJB and the UNP continue to move in different directions. Those who remain with the UNP appeared to be more comfortable having Dissanayake as the President than Premadasa. Wickremesinghe’s visit to the Opposition Leader’s Office seemed to have failed to achieve a genuine reconciliation between the two leaders. Soon after the 2019 presidential election that brought newcomer Gotabaya Rajapaksa to power, the internal crisis, within the UNP, intensified.
Defeated UNP contestant Deputy Leader Sajith Premadasa quit the party in early February 2020, to form the SJB. The SJB-led alliance was officially launched in March 2020 ahead of the parliamentary polls in August 2020. The UNP split in the aftermath of the 2019 presidential poll created an extremely unfavourable environment for Wickremesinghe who suffered a crushing defeat at the August parliamentary polls. The UNP was reduced to one National List slot whereas the SJB secured 54 seats, including seven National List slots. Wickremesinghe failed to retain his Colombo District parliamentary seat.
Wickremesinghe refrained from filling that solitary National List slot till June 2021. By then, the economic crisis had set in. Wickremesinghe entered Parliament on 23 June, 2021. Rapid economic deterioration led to sovereign default the following year. Political stability created an environment for Wickremnesinghe to exploit. Wickremesinghe didn’t hesitate to accept the premiership on 12 May, 2022, soon after SJB leader Sajith Premadasa turned down President Gotabaya Rajapaksa’s invitation. The beleaguered UNPer couldn’t have asked for more. The SLPP ended up electing Wickremesinghe as Gotabaya Rajapaksa’s successor 10 weeks later, a decision that the party now rued. In hindsight, the consensus between the Rajapaksas and Wickremesinghe, in the short term, benefited both parties but undermined efforts to iron out differences between the SJB and the UNP.
The UNP felt that it should have the final say in the issue at hand. However, the SJB quite rightly asserted that securing 54 seats at the 2020 parliamentary election should be taken into consideration. The UNP was down to one National List slot and in the wake of the SLPP accommodating Wickremesinghe in the Executive Office, Wajira Abeywardena filled that vacancy.
In fact, the UNP never relished consensus with the SJB. Instead, Wickremesinghe felt that it could extend his partnership with the SLPP, to his advantage, by securing its approval as the party’s 2024 presidential poll. Had that happened, the SLPP would have further deteriorated though Wickremesinghe could have polled a far larger share of votes at the presidential poll. Contesting as an independent, Wickremesinghe polled over 2.2 million votes at the presidential election. That defeat compelled Wickremesinghe, who turned 75 in the run-up to the presidential poll, not to join the parliamentary polls fray.
Wickremesinghe knew the signs. He knew the game was over and the UNP no longer appealed, even to die-hard supporters. The UNP leader quietly brought together the remnants of the UNP with the SLFP and SLPP and fielded them under the NDF’s symbol. As mentioned at the onset of this piece, the NDF, under Wickremesinghe’s leadership, obtained five seats. But, he never managed to retain control of the parliamentary group. Against the backdrop of an unprecedented deterioration of the UNP, the 22nd Amendment, in a way, has helped Wickremesinghe to work out a strategy to somewhat consolidate his position. The Flower Road operation has given Wickremesinghe some leverage as the NPP battled the high profile Bar Association of Sri Lanka (BASL)-led campaign against the 22nd Amendment.
NPP strategy
The NPP seems confident that the SJB and the UNP, under any circumstances, will not amalgamate or contest under one symbol. The NPP’s political strategy is based on the presumption that the two parties lacked the will to do so, though they realised their costly failure to reach consensus at the last presidential and parliamentary polls in 2024. Both parties suffered at the 2025 May Local Government polls as well. In a last-ditch attempt UNP leader Wickremesinghe proposed that the UNP and SJB contest the Colombo Municipal Council under one symbol. That proposal never materialised.
As a result, the UNP lost the CMC after more than 50 years. The UNP won the CMC in 2011 when the rival UPFA, led by the then President Mahinda Rajapaksa, won all other local government bodies outside the Northern and Eastern Provinces, two years after the eradication of the LTTE.
Opposition sources acknowledged that nothing short of an arrangement to contest the next election, under one symbol, wouldn’t help them. “We are unable to fully exploit the deterioration of public confidence in the NPP due to the appalling failure to bring talks between the two parties to a successful conclusion,” a source familiar with the developments said.
The 22nd Amendment gave an opportunity for the SJB, with 40 MPs in Parliament, and the UNP, sans any parliamentary representation, to finalise an arrangement. Unfortunately, they failed to do so, thereby allowed the government to proceed with the strategy. A major campaign, led by President Dissanayake himself, scheduled to be launched on 5 September, underscored their strategy, whereas the Opposition remained still unsure of its own counter-strategy. Had they at least managed to organise a few mega rallies with the participation of the entire Opposition, the NPP may have come under real pressure. Unfortunately, even after the Illankai Thamil Arasu Kadchi (ITAK) and Tamil Progressive Front (TPA) representing upcountry political parties declared strong opposition to 22nd Amendment, the SJB couldn’t take the lead in organising a large-scale counter campaign. Instead, the Janathawadi Joint Opposition, operating out of the Flower Road Office, has exploited the situation to its advantage.
Despite both the SJB and the UNP (Janathawadi Joint Opposition) moving the Supreme Court against the 22nd Amendment, they conveniently failed to appear together at regular media briefings, held at Wickremesinghe’s Flower Road Office, where Prof. Peiris, in his capacity as the convenor of the grouping, meticulously dealt with the developing story.
Regardless of the failure on the part of the SJB and the UNP to finalise an arrangement with eyes on the next election, the BASL-led campaign against the 22nd Amendment caused significant damage to the NPP’s reputation. The BASL’s shocking revelation that two deserving justices, namely senior justice of the Court of Appeal, Dhammika Ganepola, and senior-most justice of the Court of Appeal, justice R. Gurusinghe, were deprived of promotion to the Supreme Court by the incumbent administration, was received by the public with disappointment. The BASL released 17 August, 2026, dated, hitherto unpublished letter, addressed to President Dissanayake, that dealt with unfilled vacancies in the superior courts, while the government preached the public of its determination to deal with a mountain of case backlog.
Unfortunately, the Opposition campaign lacked direction though some former and present lawmakers targeted the 22nd Amendment. With almost all who moved the Supreme Court against the 22nd Amendment seeking all remaining judges of the Supreme Court to hear the petitions with the BASL suggesting that Chief Justice recuse himself of hearing the cases over conflict of interests and all agreeing on a referendum to approve of the controversial constitutional amendment, the apex court constitutionally is authorised to take three weeks to decide on the issue at hand.
The decision is expected to be communicated to Speaker Dr. Jagath Wickremaratne around the time President Dissanayake completed his second turbulent year in Office on 21 September.
Midweek Review
The local and global dynamics of Sri Lanka’s 22nd Amendment
Beyond noise and acrimony:
by Sasanka Perera
(The writer is on X as @sasmester)
Background
The Sri Lankan government has proposed to introduce the 22nd Amendment to the Constitution focused on increasing the retirement age for Supreme Court and Court of Appeal judges. Coupled with parallel legislative adjustments to the Judicature Act of 1978 governing the functioning of lower-tier courts, the initiative has drawn sharp criticism from domestic legal bodies, opposition political parties, human rights activists and scrutiny from international organisations, most notably the United Nations Special Rapporteur on the Independence of Judges and Lawyers.
Locally however, much of the debate is lost in the noise of acrimony, name-calling and what can only be called ‘social media violence’ rather than becoming a sensible discourse of rational and courteous debate. A week ago, a simple tweet from me on my wariness over getting the UN involved in this matter and the UN’s general bias towards countries like ours literally went viral, castigating me as a supporter of the government. My public writing in support and often in opposition to government positions — as demanded by different cases and situations — had no impact whatsoever. This virulent noise has no place in democratic practice, which all these noisemakers nevertheless claim to protect. This essay, however, finds its genesis in that noise as a means of making sense of the politics of the 22nd Amendment for myself and for any sensible people who might want to ponder over its implications.
As far as my understanding goes as a citizen without a legal background, the present controversy touches on the core tension amongst practical administrative necessity as seen by the government, constitutional integrity as argued by many in the legal profession, human rights advocates and opposition politicians and the geopolitics of international human rights oversight exercised by entities such as the UN.
Under Article 107 of Sri Lanka’s 1978 Constitution, the mandatory retirement age for Supreme Court judges is 65 years, while Court of Appeal judges must retire at 63 years. The proposed 22nd constitutional amendment seeks to raise these limits by two years. That is, extending Supreme Court tenure to 67 years and Court of Appeal tenure to 65 years. It also proposes that the number of judges in the Court of Appeal be increased from 19 to 24. Further, in the case of the Chief Justice, it is specified that the retirement date would be 67 years or after completing six years in office, subject to whichever comes first. In parallel, the government has also proposed to amend the Judicature Act of 1978 with the aim of raising the retirement age of High Court judges to 63 years and for District Court judges and Magistrates to 62 years. In other words, the overall proposal is to increase the retirement age of judges throughout the judicial hierarchy by two years.
Government’s Rationale
The government’s justifications for the proposed amendment rests on two general parameters. One is efficiency in judicial administration. The other is the retention of experienced judges for an additional period of two years. In this context, the government and its supporters in civil society do not perceive the proposal as a political maneouvre, but rather as an urgent administrative intervention that is essential to clear the backlog of cases throughout the judicial system. There is no doubt that the system is clearly overworked, understaffed and inefficient, and as a result, burdened with a serious backlog of cases.
Sri Lankan courts face an acute backlog exceeding 1.1 million pending cases according to some estimates. In this context, the government’s argument is that retaining seasoned judges is vital to maintain case disposal rates and prevent systemic paralysis. Extending judicial service is presented as a pragmatic mechanism to preserve institutional memory and combat capacity shortages.
Objections and Opposition
Despite official justifications, most of which seem legitimate based on actual experience and existing data, some legal analysts, opposition figures, and civil society groups suspect unstated political objectives behind the timing and structure of the reform. For them, a primary concern is that the amendment is structured to apply retroactively or immediately to sitting judges rather than prospective future appointees. Critics suggest this directly benefits specific high-ranking figures ranging from the incumbent Chief Justice to senior appellate judges, who are nearing the mandatory retirement age while overseeing politically sensitive cases. On the other hand, one can argue it is precisely because some of them are presiding over politically sensitive cases, that they need to complete the relevant cases for which experience, familiarity as well as institutional memory are essential.
However, there is no doubt that extending the tenure during an active term creates the impression of a government benefit granted to sitting judges. Whether this is the intention or whether it becomes reality, appearances do matter. The main point opponents bring out is, this specific intervention risks compromising the perception of judicial neutrality in a situation where sitting judges might be perceived as indebted to political authority for extending their service. While this is indeed a possibility, it is nevertheless not a necessary outcome.
Formal and vocal opposition at the moment is led by the Bar Association of Sri Lanka, local political parties, and some constitutional experts. But this has not become a bread-and-butter issue yet in the country. That is, there is no way this issue will capture the public imagination in the manner more pressing bread and butter issues did in the aragalaya of 2022. Also, Sri Lanka’s fractured and delegitimised opposition sharing the same argumentative plain with an entity like the Bar Association of Sri Lanka does not help the latter when it comes to generating public sympathy for its cause however legitimate it might be.
To my understanding and reading between the lines amidst the deafening noise in the vocal opposition, the above concerns are based on several core arguments.
One has to do with the perceived erosion of the separation of powers. That is, changing the retirement age of sitting judges mid-tenure can compromise constitutional predictability and impartiality. Theoretically, fixed retirement ages exist in judicial systems globally to specifically protect judges from executive interference or influence. The second concern I can see but not clearly articulated by sceptics has to do with the possibilities of career stagnation. In other words, delaying emergent vacancies at the Supreme Court and Court of Appeal will create a bottleneck across the entire judicial hierarchy for some time, potentially demoralising junior judges in the High Courts and District Courts awaiting elevation. Finally, there is a concern over the long-term government failure to effectively utilise cadre expansion that has already been made possible which precedes the present government’s access to office. Prior constitutional changes (such as the 20th Amendment) already had expanded the numerical capacity of the superior courts. In this context, the argument is that the government should focus on filling existing vacancies with new appointees rather than altering the tenure of current judges. Purely as matters of principle, theory and potential impact on democratic governance, none of these concerns are spurious.
The UN Special Rapporteur’s Intervention
The 22nd Amendment is no longer merely a local political issue. On 7 August 2026, Margaret Satterthwaite, the UN Special Rapporteur on the Independence of Judges and Lawyers, addressed a five-page official communication to the Sri Lankan government based on ‘information’ her office had received and issued 7 requests for further information. Internationalisation of the politics surrounding the 22nd Amendment is also an integral part of Sri Lanka’s oppositional politics. While acknowledging that raising retirement ages can preserve expertise, her mandate emphasised that alterations to judicial tenure must adhere strictly to international standards. The Special Rapporteur highlights a number of primary concerns, which include the following: 1) She is concerned with the application of the proposed changes to sitting judges. That is, extending terms for sitting judges without clear, objective, and transparent transitional safeguards creates the risk or perception of political favor. 2) Second, she has raised concerns over the lack of broad consultations in introducing the proposal. In other words, the rapid introduction of the amendment without inclusive public and professional stakeholder consultation can threaten public trust in the rule of law. 3) Finally, she has also referred to a potential conflict of interest. That is sitting judges benefiting from the extension could face a structural conflict of interest if called upon to adjudicate constitutional challenges against the very amendment that extended their careers.
In a sense, these concerns are very similar to the concerns raised by the local opposition. But in real terms, is the 22nd Amendment unusual or inherently anti-democratic that it warrants a UN body to be this concerned when in general it is often not concerned beyond rhetoric in far worse situations? Increasing judicial retirement ages is a common trend globally, driven by demographic shifts and longer life expectancy. However, the mechanisms and contexts of various cases differ considerably. Through the Public Service Pensions and Judicial Offices Act 2022, the United Kingdom raised the mandatory retirement age for judicial office holders from 70 to 75. This included judges, magistrates, and coroners. The rationale for this provided by the UK government at the time cited improvements in life expectancy, the need to address post-pandemic court backlogs, and recruitment gaps across courts. Crucially, the change followed a comprehensive public consultation involving over 1,000 responses from legal professionals, the magistracy, and civic bodies.
An Australian state and a self-governing territory, namely, New South Wales and Northern Territory offer other recent examples. Australia does not have a single uniform retirement age for all state and federal judges. Under Section 72 of the Australian Constitution, federal judges have a fixed retirement age of 70. However, individual states have raised state-level judicial retirement ages at different times. In 2018, New South Wales enacted the Justice Legislation Amendment Act (No. 2) 2018, raising the mandatory retirement age for state judges and magistrates from 72 to 75. Similarly, in 2019, the Northern Territory also raised the retirement age for Supreme Court judges from 70 to 72 years under the Justice Legislation Amendment Act 2019.
But the UN Special Rapporteur did not issue formal communications or allegations to either the United Kingdom or the Australian state and territory regarding these specific tenure increases — with reason. For one thing, both the UK and Australian state and territorial governments conducted long-term, transparent public consultations with legal professional bodies prior to enacting legislation. That is, there was an appearance of reasonability. On the other hand, in these cases, the reforms were introduced as broad, systemic statutory updates rather than ad-hoc constitutional amendments enacted amid heightened domestic political tension or ongoing sensitive litigation involving sitting judges as is the case in Sri Lanka. Finally, in these cases, the policy changes were implemented via general legislative consensus rather than executive-driven constitutional maneuvers that directly benefited individual judges in real-time in the short term.
Further, in these cases, as far as I can see, there were no formal complaints to the UN from any entity in these countries given that there were adequate consultations. On the other hand, unlike the UK or Australia, bodies like the UN generally assume countries like Sri Lanka are inherently anti-democratic and therefore need oversight. It is in such a context that the UN Special Rapporteurs have routinely issued communications to other countries that have altered judicial terms. For example, Poland, Hungary, and Bolivia have received such communications when changes to judicial retirement ages or tenure were perceived as attempts by the governments concerned to alter the composition of courts or erode judicial independence. The Sri Lankan case too must be understood in such a situation. The government, on its part, has submitted a six-page response accompanied by two annexures to the Special Rapporteur’s communication on 21 August 2026. It responds fully to the queries raised by the Special Rapporteur rationally. However, if it closes the matter remains to be seen.
The problem in this context is that Sri Lanka has the added complication of having a resolution on its human rights situation in the United Nations Human Rights Council since 2012. The next formal update on this resolution is scheduled for the 63rd session of the UN Human Rights Council taking place from 7 September to 9 October 2026. My concern in internationalising a domestic issue such as the opposition to the 22nd Amendment is that it could feed into the longstanding resolution giving further ammunition to Sri Lanka sceptics and detractors both in and outside the country. This is an unnecessary burden for a country like Sri Lanka lacking the power wielded by mass human rights violators such as Israel and its sponsor the United States. It is also a needless distraction for a country that is trying to reinvent itself. In such a situation, dealing with the sins of the predecessors does not help, more so, when UN impartiality is known to be selective.
The Future of the 22nd
Amendment
The controversy surrounding Sri Lanka’s proposed 22nd Amendment illustrates the delicate equilibrium required in constitutional governance and democratic practice. On a practical level, the government’s argument addresses an undeniable operational crisis. That is, as a means to deal with an overburdened legal system requiring the retention of experienced judicial personnel to deliver timely justice. Yet, on a principled level, constitutional safeguards exist precisely to ensure that procedural mechanisms are insulated from perceived political manipulation. In my mind, the government’s cardinal mistake was not to have wide-ranging consultations and information sharing programmes before the proposal became a contentious issue. This is simply good PR and common sense. Consultations and information sharing do not mean wholesale adherence to opposition positions. It simply means transparency, accepting what is reasonable, not accepting what makes no sense and offering at least a semblance of fair play. This would have also ensured that the government did not need to be overly defensive as it is now. In any case, given its overwhelming majority in parliament, the government does not need any support from the opposition to pass legislation. But it can certainly afford to be politically intelligent, sophisticated and mature in its public demeanor.
When a government alters the terms of service for sitting judges, the primary challenge is rarely the increased age limit. Rather, it is the need to preserve public trust in judicial neutrality. As comparative examples demonstrate, nations can adjust judicial tenure legally and successfully when changes are accompanied by broad professional consensus, prospective application, and transparent legislative processes.
Sri Lanka’s challenge lies in balancing the immediate demands of judicial efficiency against the enduring requirement that constitutional reforms must satisfy both domestic legitimacy and established international standards of judicial independence, particularly in a situation the latter is inherently oppositional to nations who do not have a veto or global political wherewithal to withstand pressure.
Midweek Review
The ‘Ice’ Avalanche
By Lynn Ockersz
‘Sunshine Isle’ saw it coming right along,
Yet did not heed well the warning rumbles,
Of this ‘Ice’ avalanche that’s flattening lives,
Particularly those of the land’s young,
That are verily the nation’s life blood,
But there’s more at issue in this grave crime,
Than seizing kingpins and locking them up;
It’s rather a question of making the young see,
That their lives ahead are full of possibilities.
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