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Photos: Delhi’s second sero survey suggests 3 in 10 have antibodies

Results of Delhi’s second serological survey, implemented across the 11 districts of the national capital, shows that 29.1% of the population has now developed antibodies for SARS-CoV-2. The previous serological survey done from June 27 to July 10 had used 21,387 samples and found that around 23% of the people surveyed had an exposure to the novel coronavirus. There has been an increase of 6 to 50% in prevalence of antibodies among districts compared to the previous round the outbreak may be less deadly than previously feared.

Updated on: Aug 22, 2020 6:01 PM IST

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A health worker sprays disinfectant as a precautionary measure at Sardar Patel Covid Care Centre in New Delhi on August 17. Almost 30% of 15,000 people surveyed in the Capital had antibodies for the Sars-Cov-2 virus, according to the second serological survey that suggests approximately 1.2 million people more may have silently contracted, and recovered, from Covid-19 between July and early August. (Ravi Choudhary / PTI)

Updated on Aug 22, 2020 6:01 PM

A health worker sprays disinfectant as a precautionary measure at Sardar Patel Covid Care Centre in New Delhi on August 17. Almost 30% of 15,000 people surveyed in the Capital had antibodies for the Sars-Cov-2 virus, according to the second serological survey that suggests approximately 1.2 million people more may have silently contracted, and recovered, from Covid-19 between July and early August. (Ravi Choudhary / PTI)

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A health worker collects a swab sample from a woman to test for COVID-19 at New Ashok Nagar in New Delhi on August 21. Data from the survey shows that prevalence of the disease may be higher in women (32.2%) than men (28.3%), while the youngest age group (0-18) showed the highest rates of past infection (34.7%). Among the 18-50 age group, 28.5% had antibodies and for those above 50, this number was 31.2%. (Biplov Bhuyan / HT Photo)

Updated on Aug 22, 2020 6:01 PM

A health worker collects a swab sample from a woman to test for COVID-19 at New Ashok Nagar in New Delhi on August 21. Data from the survey shows that prevalence of the disease may be higher in women (32.2%) than men (28.3%), while the youngest age group (0-18) showed the highest rates of past infection (34.7%). Among the 18-50 age group, 28.5% had antibodies and for those above 50, this number was 31.2%. (Biplov Bhuyan / HT Photo)

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Migrant workers arriving from other states register for rapid antigen tests for COVID-19 at Anand Vihar ISBT in New Delhi on August 18. Sero survey data also indicated that the outbreak may be less deadly than previously feared, and that a large chunk of infections are going undetected by the existing testing mechanism in the Capital. (Amal KS / HT Photo)

Updated on Aug 22, 2020 6:01 PM

Migrant workers arriving from other states register for rapid antigen tests for COVID-19 at Anand Vihar ISBT in New Delhi on August 18. Sero survey data also indicated that the outbreak may be less deadly than previously feared, and that a large chunk of infections are going undetected by the existing testing mechanism in the Capital. (Amal KS / HT Photo)

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Healthcare workers conduct Covid-19 tests for migrant workers arriving at the Anand Vihar ISBT in on August 18. “It is relieving to know that around 29% of the city’s population has recovered after being infected by the coronavirus. On the other hand, 71% of people in Delhi have not developed antibodies, which means that they are still vulnerable,” said Delhi health minister Satyendar Jain while releasing the results. (T. Narayan / Bloomberg)

Updated on Aug 22, 2020 6:01 PM

Healthcare workers conduct Covid-19 tests for migrant workers arriving at the Anand Vihar ISBT in on August 18. “It is relieving to know that around 29% of the city’s population has recovered after being infected by the coronavirus. On the other hand, 71% of people in Delhi have not developed antibodies, which means that they are still vulnerable,” said Delhi health minister Satyendar Jain while releasing the results. (T. Narayan / Bloomberg)

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People by India Gate on a rainy August 19. “The people of Delhi are being very careful in taking precautions against Covid-19. So, this is a very positive development. It shows that the Covid-19 infection numbers are no longer rising exponentially in Delhi,” Jain said, while adding that the Capital “is heading towards herd immunity, but experts say that should be at least 40%”. (Sonu Mehta / HT Photo)

Updated on Aug 22, 2020 6:01 PM

People by India Gate on a rainy August 19. “The people of Delhi are being very careful in taking precautions against Covid-19. So, this is a very positive development. It shows that the Covid-19 infection numbers are no longer rising exponentially in Delhi,” Jain said, while adding that the Capital “is heading towards herd immunity, but experts say that should be at least 40%”. (Sonu Mehta / HT Photo)

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Civil Defence personnel stop people who were not wearing face masks and ask them to get tested for Covid-19 at Adarsh Nagar on August 20. The minister however, said the higher prevalence, which also indicates a larger proportion is now immune to the disease, does not mitigate the risks of resurgence. (Sanchit Khanna / HT Photo)

Updated on Aug 22, 2020 6:01 PM

Civil Defence personnel stop people who were not wearing face masks and ask them to get tested for Covid-19 at Adarsh Nagar on August 20. The minister however, said the higher prevalence, which also indicates a larger proportion is now immune to the disease, does not mitigate the risks of resurgence. (Sanchit Khanna / HT Photo)

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A health worker tests people for Covid-19 at Adarsh Nagar on August 20. The findings underscore the challenge posed by the Sars-Cov-2 virus, which experts believe largely does not cause symptoms in those infected, but those infected can pass it on to others. The July 10 - August 7 period had roughly 33,500 confirmed infections, compared to the 1.2 million who may have actually had it if the survey findings are extrapolated. (Sanchit Khanna / HT Photo)

Updated on Aug 22, 2020 6:01 PM

A health worker tests people for Covid-19 at Adarsh Nagar on August 20. The findings underscore the challenge posed by the Sars-Cov-2 virus, which experts believe largely does not cause symptoms in those infected, but those infected can pass it on to others. The July 10 - August 7 period had roughly 33,500 confirmed infections, compared to the 1.2 million who may have actually had it if the survey findings are extrapolated. (Sanchit Khanna / HT Photo)

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A health worker carries a box of Covid-19 testing kits while at work in Ashok Nagar on August 18. The health minister also said that of Delhi’s population of around 20 million around 5.9 million may have contracted the Sars-Cov-2 virus and recovered. He pointed to subsequent spikes in other nations to stress on the need to maintain precautions. The next survey begins September 1. (PTI)

Updated on Aug 22, 2020 6:01 PM

A health worker carries a box of Covid-19 testing kits while at work in Ashok Nagar on August 18. The health minister also said that of Delhi’s population of around 20 million around 5.9 million may have contracted the Sars-Cov-2 virus and recovered. He pointed to subsequent spikes in other nations to stress on the need to maintain precautions. The next survey begins September 1. (PTI)

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