In a recently conducted seroprevalence survey in Hyderabad, it has been found that around 54 percent of residents living in Hyderabad have already developed antibodies against COVID-19.
In a recently conducted seroprevalence survey in Hyderabad, it has been found that around 54 percent of residents living in Hyderabad have already developed antibodies against COVID-19. This means that more than half the population has been exposed to the novel coronavirus. Interestingly, more than 75 percent of those who found out to be seropositive, did not even know that they have had the viral infection in the past, a report by The IE noted. The study was conducted by ICMR – National Institute of Nutrition (NIN), Bharat Biotech, and CSIR – Centre for Cellular and Molecular Biology (CCMB).
In order to map the seroprevalence of COVID-19 antibodies against the viral infection, as many as 9,000 samples were checked for antibodies and these were collected from across 30 wards of the city, the report said. A minimum of 300 people from each ward (those older than 10 years of age) was tested in this survey. The survey noted a uniformity in the range of seroprevalence from 50-60 percent, but in some wards, their prevalence was 70 percent and in some, it went low 30 percent.
According to the report, women have shown a seropositivity rate of 56 percent which is marginally higher than the 53 percent seropositivity rate found in men. People above the age of 70 years had lower seropositivity and this can be attributed to limited mobility as well as extra care that is taken by older individuals during the pandemic.
Dr. A Laxmaiah, Scientist ‘G’ at the NIN in a press statement underlined that the families with larger numbers of rooms in a house along with a small family size can lead to a low prevalence of coronavirus infection. Regarding the survey, Dr. R Hemalatha, Director, NIN, said that their observations show antibody formation that took place with silent infections.
Moreover, the study saw individuals having prominent Covid-19 symptoms along with the ones being asymptomatic had similar seroprevalence at 54 percent. Dr. Rakesh Mishra, Director, CCMB said that the study conducted has highlighted a comprehensive perspective when it comes to the potential protective immune response against the COVID-19 in Hyderabad’s population. The data shows slow movement towards herd immunity, however, Mishra believes it can be accelerated with the push of vaccination drive.