A total 8674 samples were tested during the BMC survey, conducted between August to September.
On September 17, Brihanmumbai Municipal Corporation (BMC) announced the analysis report of the fifth sero-survey organised within the jurisdiction, between August and September. A total 8674 samples were tested during the survey where around 90% of those vaccinated partially or fully revealed antibody prevalency. Additionally, around 80% of the unvaccinated lot also displayed a bolstered immunity against the coronavirus.
A total of 5 BMC sero-surveys have been conducted till now
The BMC health department, The Lokmanya Tilak Municipal General Hospital and Medical College, Sion Hospital conducted a sero-survey from August 12 and September 8, this year. Driven by the support of the A.T.E. Chandra Foundation and IDFC Institute, the initiative revealed an average sero-prevalency of around 86% in Mumbai.
Reportedly, this is the fifth such survey conducted in the metropolis and the only one to display a negligible difference in the sero-positivity of city slums and urban areas. About 87.02% of people in slums, and 86.22% in non-slum areas have shown immunity against the virus, denoting the highest record in the history of all sero-surveys in Mumbai.
The first sero-survey conducted in July 2020 showed about 16% and 57% sero-prevalence in non-slums and slums, respectively. This was followed by another routine in August '20, that revealed a marginal rise of 18% in non-slums and a dip to 45% in Mumbai slums. In March '21, the study highlighted an approximate 28% prevelancy in non-slums and about 41% in slums. A dedicated paediatric survey was also conducted in Mumbai, this year.
Latest sero-survey reveals higher prevalency among women
The latest survey conducted across all 24 wards in Mumbaoi showed a higher sero-positivity in females than males. In figures, around 85% of males reported antibodies, while females account for a higher 88% share.
Furthermore, the report states that only 64% of the survey pool had received COVID immunisation. Out of the total samples collected, 20% were healthcare workers and of them, about 87% had developed antibodies.
The survey was fragmentary in essence and included participants above 18 years of age from about all administrative wards of Mumbai. Participants for the study were randomly selected through an organised sampling drive. The survey pool also those individuals who had visited municipal dispensaries or clinics in slums or urban areas, as well.
The data was acquired through a mobile software application after the applicants had provided consent for the tests. Anti-SARS-CoV-2 lg G antibodies were detected using an ELISA based assay.
Accelerated vaccination drives to boost antibodies in residents
Even though antibodies have been found in an increased population, the public is urged to keep up with the COVID protocols; use masks, hand sanitisers and honour social distancing norms. Based on survey reports, civic officials further plan to accelerate vaccination drives, across Mumbai, to bolster the antibody levels among people.