The latest sero survey conducted in Nagpur district showed that about 84% of city population has developed anti-bodies against COVID-19.
The sero survey to know sero prevalence of COVID-19 was carried out between October 20 and November 27 soon after the second COVID wave. In this survey blood samples were collected and they were tested for presence of anti-bodies.
Sampling was done in a scientific manner as followed by ICMR in other parts of country while conducting sero survey. This survey was carried out in all the 10 zones of NMC and 13 Talukas of other than NMC area of Nagpur district.
Zone wise data-
Each zone of NMC was further divided into 4 clusters, which were selected in scientific manner and 75/80 samples were collected from each cluster i.e. 310 samples from each zone and 3,100 samples from NMC area were collected and tested from other than NMC area which includes Municipal councils and rural areas. All the individuals below the age of 6 years were excluded from this survey.
The sero survey showed that, sero prevalence in the NMC area was 84%, whereas in Nagpur district it was 80.05%.
There is still no concrete data to support the fact that the presence of antibodies against COVID-19 is protective against re-infection. It has also been observed that, due to emergence of new variants threat of vulnerability for re-infection to this virus may further increase.