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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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President Commissions Offshore Patrol Vessel ‘Samudra Vijaya’ into Sri Lanka Navy

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The commissioning ceremony of the deep-sea patrol vessel as Samudravijaya, gifted to the Sri Lanka Navy by the United States Coast Guard to enhance the Navy’s operational capabilities, was held under the patronage of Commander-in-Chief of the Armed Forces, President Anura Kumara Dissanayake, on Thursday afternoon (04) at the Eastern Terminal premises of the Port of Colombo.

The vessel was officially handed over to Sri Lanka by the United States Coast Guard on 2 December 2025. Following modifications to meet the operational requirements of the Sri Lanka Navy, the vessel commenced its voyage to Colombo on 20 February 2026 from the United States Coast Guard Yard in Baltimore, Maryland.

The induction of the vessel marks a significant step towards further strengthening the operational capabilities of the Sri Lanka Navy and enhancing the country’s maritime and national security. The vessel is expected to make an important contribution to maritime surveillance, search and rescue operations, protection of fisheries resources, environmental monitoring and the enforcement of international maritime laws and conventions. In particular, it will serve as a vital asset in combating narcotics trafficking and other transnational maritime crimes, which remain major challenges for both Sri Lanka and the wider region.

During the ceremony, President Dissanayake presented the official commissioning warrant to the vessel’s Commanding Officer, Captain Gayan Wickramasuriya. The President subsequently unveiled the vessel’s name board and official insignia before undertaking an inspection tour of the ship. The Commander of the Navy briefed those present on the vessel’s operational readiness, systems and capabilities.

President Dissanayake also signed the vessel’s Distinguished Visitors’ Book and was presented with a commemorative plaque featuring a replica of the vessel.

Among those present were Minister of Ports and Civil Aviation Anura Karunatilaka. Deputy Minister of Defence, Major General Aruna Jayasekara (Retd.), Secretary to the Ministry of Defence, Air Vice Marshal Sampath Thuyacontha (Retd.), Admiral of the Fleet Wasantha Karannagoda, Commander of the Army, Lieutenant General Lasantha Rodrigo, Commander of the Air Force, Air Vice Marshal Vasu Bandu Edirisinghe. Commander of the Navy, Vice Admiral Kanchana Banagoda, Inspector General of Police, Attorney-at-Law Priyantha Weerasooriya, Charge d’affaires to the U.S. Embassy Ms. Jayne Howell, Senior Defence Official and Defence Attache with Spouse Lieutenant Colonel Matthew House, representatives of the Embassy and senior officers of the Sri Lanka Navy.

(PMD)

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Elders’ home devastated by fire was a ‘house of horror’: Witnesses

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Death toll rises to 12: Director remanded

Some residents were allegedly chained

Police have come under public pressure to investigate allegations of inhumane treatmenf the residents at an elders’ home in Batagoda, which was also reportedly used as a care centre for persons with special needs, following a devastating fire that has so far claimed 12 lives.

Eyewitnesses who were among the first responders told the media that several residents had been chained inside rooms at the Senehase Kedella Elders’ Home when the fire broke out on Wednesday. They claimed that rescue efforts were hindered as iron chains could not be removed, and that some residents died while being restrained.

Authorities have not yet verified these claims, and Police said investigations are continuing.

Police spokesman ASP F.U. Wootler, contacted for comment, said there were rumours to that effect, but the Police were not in a position to verify the claims until a report from the Government Analyst was received. He said eight survivors with burn injuries were being treated in hospital.

Meanwhile, the Director of the facility had been arrested and was due to be produced before the Horana Magistrate’s Court, Police said adding that he was remanded till June 11.

The death toll from the fire has risen to 12 as of Thursday morning following the recovery of additional charred remains during ongoing forensic examinations at the site. Six others sustained serious injuries and are being treated at the Horana Base Hospital.

Police said 72 residents were inside the facility at the time of the blaze. Of them, 10 died inside the building, seven were injured and hospitalised, while 51 were rescued and relocated.

Survivors were initially housed at Batagoda Junior School before being transferred with Army assistance to another branch of the same care network in Galpatha.

A magisterial inquiry was conducted on Thursday morning. Horana Magistrate Lakmini Vidanagamage visited the scene. The burnt remains were examined and removed under judicial supervision.

Separately, allegations have emerged that residents were required to pay an admission fee of Rs. 75,000, along with a monthly charge of Rs. 35,000 to the centre. Police have not commented on these claims.

The director was taken to the scene as part of ongoing investigations, while forensic experts continue examinations to determine the cause of the fire, which remains undetermined.Anguruwatota Police are conducting investigations.

 By Norman Palihawadane and Nishan S Priyantha

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CERT : AI-generated videos depicting Prez, PM lure public into financial scams

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Sri Lanka CERT has issued a public warning over the circulation of artificial intelligence (AI)-generated videos falsely depicting President Anura Kumara Dissanayake, Prime Minister Harini Amarasuriya and several other prominent personalities to promote fraudulent investment schemes online.

According to complaints received by the national cyber security agency, the videos have been created using deepfake technology and are being used as part of attempts to defraud members of the public through financial scams.

The images of famous sports personalities and other public figures have also been misused in the deceptive content.

The agency has warned that similar AI-generated material has been used to spread false information relating to investment opportunities, employment offers, as well as matters concerning the country’s economy and tax policies.

According to Sri Lanka CERT, the videos are being widely shared across online platforms and frequently contain links urging viewers to make investments in return for purported profits.The agency has cautioned that these links may redirect users to fraudulent websites designed to steal personal information, financial data and money from unsuspecting victims.

Sri Lanka CERT has urged the public to exercise extreme caution when encountering such content online and advised against clicking on suspicious links or sharing personal information through unverified websites.

“The public should remain vigilant and avoid becoming victims of false information and online fraud schemes,” the agency said.

Sri Lanka CERT has also encouraged internet users to verify information through official sources before acting on any investment, employment or financial offers circulated via social media or other online platforms.

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