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The fifth serosurvey directed by the Brihanmumbai Municipal Corporation (BMC) in Mumbai in August 2021 shows that 86.64 percent of the 8,674 individuals surveyed have antibodies against Covid-19. This is fundamentally higher than the third sero-surveillance directed in March this year, which found 36.3 percent of those surveyed had antibodies against Covid-19. 

The most recent survey, which covered 8,674 individuals, discovered a seropositivity pace of 87.02 percent in slums, and 86.22 percent in non-ghetto regions. This is the initial occasion when there is a small distinction in the seropositivity of the ghetto and non-ghetto populace in the city. 

The last serosurvey, directed in March this year, had discovered seropositivity of 41.6 percent in slums and 28.5 percent in non-ghetto regions. "In general, the seroprevalence in the ghetto and non-ghetto regions in the city of Greater Mumbai is a lot higher when contrasted with the last serosurvey," expressed the community body in its assertion. 

BMC has directed three sero-surveillance reads for Covid-19 and one sero-surveillance study for the pediatric populace beforehand. The most recent sero-surveillance was directed between August 12 and September 8 this year. 

This sero-surveillance additionally incorporated the immunized populace. The BMC had expected antibodies per focus to ascend in this survey inferable from the mass vaccination program. The survey found seroprevalence among to some degree and completely inoculated members is 90.26 percent, while seroprevalence among the individuals who have not taken the Covid-19 immunization is 79.86 percent. 

The ascent in antibodies in the non-ghetto populace in this survey is demonstrative of ongoing disease patterns. In the main wave, slums were most noticeably awful influenced. In any case, in the subsequent wave, the information by the BMC had shown that out of 87,000 dynamic cases in April this year, 90% were gathered in elevated structures while slums represent only 10%. 

In July 2020, the aftereffects of the first serosurvey showed seroprevalence remained at 16% in non-slums. In August, a subsequent survey, in any case, showed that seroprevalence rose hardly to 18 percent for non-slums. In March this year, seroprevalence in non-ghetto regions was 28.5 percent.