The reports also documented a 12% fall in the existence of COVID-19 antibodies from the samples of the slums.
2,10,060 confirmed cases in Mumbai
The reports also documented a 12% fall in the existence of COVID-19 antibodies from the samples of the slums. The presence of anti-bodies in blood samples indicate that a person has been exposed to an infection; in this case, specifically, the coronavirus. So going by this logic, it is being said that the infection spread in slums, may have come down. The survey did not count the people who are in institutional quarantine facilities and containment zones. According to the current reports, around 45% people were found to have covid antibodies as compared to the reports of 57%, during the first serosurvey. Chances of herd immunity is also nil, at this point.
The BMC was quoted saying, "Sero-positivity from the second round, taken together with the current number of reported cases from slum areas in these wards, indicates there could be a reduction in the spread of infection in slum areas." The release also mentioned that the sero-prevalence of COVID-19 infection in women was marginally higher than men in both the rounds. In the 2nd survey, sero-prevalence in the age group above 40 was slightly higher.
Furtehrmore, the BMC added, "Emerging scientific evidence hints at fall of antibody levels in recovered patients/asymptomatic patients over a period of time and this might have contributed to the trend between two rounds of sero-survey. The impact of this on immunity, if any, is still unknown."
As of today, Mumbai has reported 2,10,060 confirmed cases and 1,72,029 have recovered and gone back home. The city has also observed 9429 fatalities.