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Delhi moving closer to achieving herd immunity against Covid-19

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BY S VENKAT NARAYAN

Our Special Correspondent

NEW DELHI, January 26:

The fifth round of serological surveillance conducted in Delhi has suggested that more than 50 per cent of those surveyed have developed antibodies against Covid-19, government officials said.

This is the highest seroprevalence found during surveys conducted by the Delhi government since the Covid-19 outbreak. According to experts, this indicates that India’s national capital with a population of 30 million is moving closer to achieving herd immunity.

“In one district, the prevalence is around 58 per cent, which clearly shows that a large number of people have developed antibodies against the virus,” the Indian Express quoted a senior government official as saying.

Authorities had collected 28,840 samples — the most during such an exercise in Delhi so far — as part of the survey that ended Friday.

Only Pune city in Maharashtra state has recorded prevalence of more than 50 per cent in some areas, but that was several months ago. In most other cities, seroprevalence studies have shown antibodies in about 30 and 40 per cent of respondents.

Given that detection of new cases has been declining over the last four months, some experts and scientists believe that a much higher proportion of the population might have already got infected. The results of the Delhi serosurvey lends evidence to this.

In August last year, the first such survey conducted by the Delhi government showed 29.1 per cent had antibodies. The figure dropped to 25.1 per cent in September and stood at 25.5 per cent in October. The National Centre for Disease Control (NCDC) had also conducted a sero survey in July, where antibodies had been detected in 23 per cent of those surveyed.

The latest survey kicked off in Delhi on January 11, and samples were sent to the Institute of Liver and Biliary Sciences (ILBS) for testing. An initial report was submitted to Delhi Health Minister Satyendar Jain’s office.

Dr Shobha Broor, former head of microbiology at the All India Institute of Medical Sciences (AIIMS), said the survey “shows that there have been many asymptomatic infections in the city and we are approaching herd immunity”.

“The number may go up to 70 per cent in the next round as more people would have got vaccinated by that time. Having presence of antibodies will not affect the ongoing vaccination drive. Those who have developed antibodies can go ahead and take the shot as the vaccine will further boost the response,” she said.

Dr Neeraj Nischal, associate professor at the department of medicine, AIIMS, said the high prevalence of antibodies may help in further controlling the pandemic.

“It shows that a lot of asymptomatic infections did happen in the course of the pandemic, which were not reported at that time. This is our natural way of acquiring herd immunity as approximately 50 per cent have developed antibodies against the virus. This coupled with the ongoing vaccination drive will help in achieving herd immunity, and controlling the pandemic will be faster than expected,” he said.

A serological survey is meant to check prevalence of a disease in a population by detecting the presence of specific antibodies against the virus. The serological test is performed to diagnose infections and autoimmune illnesses. It can also be conducted to check if a person has developed immunity to certain diseases.



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GMOA warns of trade union action unless govt. urgently resolves critical issues in health sector

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Influx of substandard drugs is of particular concern

The Government Medical Officers’ Association (GMOA) has warned of renewed and intensified trade union action if the government fails to fulfil its promise to resolve the ongoing crisis in the health sector within the next few days.

GMOA Executive Committee member Dr. Prasad Colombage said his association was hopeful that commitments made by the government, including those formally stated by the Minister of Health in Parliament and recorded in the Hansard, would be implemented.

He called for urgent remedial action in view of the influx of substandard medicines into the country, patient deaths linked to such drugs, difficulties faced by doctors in prescribing medicines, and disruptions to patient care services caused by the continued migration of medical professionals. These factors, he warned, had placed patients’ lives at serious risk.

Dr. Colombage said discussions had already been held with all relevant authorities, including the President and the Minister of Health. He expressed hope that swift solutions would be forthcoming based on agreements reached at discussions. However, he cautioned that the GMOA would not hesitate to resort to strong trade union action if tangible progress was not seen in the coming days.

Meanwhile, the Federation of Medical and Civil Rights Professional Associations yesterday (01) handed over a special memorandum to President Anura Kumara Dissanayake, calling for immediate action to resolve the deepening crisis in the health sector.

Federation President, Consultant Dr. Chamal Sanjeewa, said Sri Lanka’s health system was currently facing a severe crisis and had sought an opportunity to hold discussions with the President on the matter.

The memorandum calls for the President’s direct and immediate intervention on several key issues, including the Indo–Sri Lanka health agreement, shortages of essential medicines including cancer drugs, continued allegations surrounding the administration of the Ministry of Health, reported irregularities at the National Hospital, Colombo, and the absence of an internationally accredited quality control laboratory for the National Medicines Regulatory Authority to test medicines. The Federation has also requested a meeting with the President to discuss these concerns in detail.

By Sujeewa Thathsara ✍️

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Elephant census urged as death toll nears 400

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Sri Lanka’s latest elephant census must result in immediate policy action, not remain a paper exercise, Centre for Environmental Justice (CEJ) Managing Director Dilena Pathragoda warned, as nearly 400 wild elephants have already died in 2025 alone amid escalating human–elephant conflict.

With the national elephant population estimated at around 5,879, Pathragoda said the figures would be meaningless unless they shape land-use planning, habitat protection and enforcement.

“As of mid-December, close to 397 elephants have died in 2025, mostly due to shootings, electrocution, train collisions and other human-related causes,” he told The Island. “When deaths continue at this scale, census numbers alone offer little reassurance.”

Official data show that 388 elephants died in 2024, while 2023 recorded a staggering 488 deaths, one of the highest annual tolls on record. Conservationists warn that the trend reflects systemic failure to secure habitats and elephant corridors, despite repeated warnings.

“An elephant census should not end with a headline figure,” Pathragoda said. “If these statistics do not influence development approvals, infrastructure planning and land-use decisions, they fail both elephants and rural communities.”

Elephant populations remain unevenly distributed, with higher densities in the Mahaweli, Eastern and North Western regions, while other areas face sharp declines driven by habitat fragmentation and unplanned development.

Pathragoda said recurring fatalities from gunshots, illegal electric fences, improvised explosive devices along with poisonings  and rail collisions expose the limits of short-term mitigation measures, including ad hoc fencing projects.

“The crisis is not a lack of data, but a lack of political will,” he said, calling for binding conservation policy, transparent environmental assessments and accountability at the highest level.

He urged authorities to treat elephant conservation as a national governance issue, warning that failure to act would only see future censuses record further decline of these majestic animals.

“Elephants are part of Sri Lanka’s natural heritage and economy,” Pathragoda said. “Ignoring these warning signs will come at an irreversible cost.”

By Ifham Nizam ✍️

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CTU raises questions about education reforms

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The Ministry of Education has yet to clarify whether school hours will be extended by 30 minutes from next Monday (05) under the proposed new education reforms, Ceylon Teachers’ Union (CTU) General Secretary Joseph Stalin has said.

Stalin told The Island that the Ministry should reconsider the planned reforms, warning that decisions taken without adequate study and consultation could have serious repercussions for nearly four million schoolchildren.

He said the Education Ministry had announced that education reforms would be implemented in Grades from 1 to Grade 6, but it had not said anything about the Grades above 6. This lack of clarity, he said, had created confusion among teachers, parents and students.

Stalin also noted that although learning modules had been issued, students are required to obtain photocopies based on the codes introduced in these modules. However, the Ministry had not revealed who would bear the additional financial burden arising from those costs, raising further concerns over the practical implementation of the reforms.

by Chaminda Silva ✍️

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