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) were tested in this survey. The survey noted a uniformity in the range of seroprevalence from 50-60 per cent, but in some wards, there prevalence was 70 per cent and in some it went low 30 per cent.
According to the report, women have shown a seropositivity rate at 56 per cent which is marginally higher than 53 per cent seropositivity rate found in men. People above the age of 70 years had a 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 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 per cent. 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.