It's known that the state health department of Andhra Pradesh has been conducting seroprevalence surveys. The results of the first edition were out last month. And the results of the second survey are out now.

The survey was carried out in nine districts across the Telugu State. A sample size of 5000 was chosen in each district. The news is that 19.7% of the population in the State is estimated to have already contracted the virus. As many as 96% of them were asymptomatic and, therefore, they never knew about the infection. It's called silent spreading.

Other findings:

19.5% of the surveyed males were found to be infected.
19.9% of the females were found to be infected.
22.5% of those infected were from urban areas.
18.2% of those infected were from rural areas.
20.5% were from containment zones.
19.3% were from non-containment zones.
Vizianagaram district has got the highest seroprevalence with 30.6%.