Healthcare India had 64 lakh Covid infections by May: ICMR sero survey Updated : September 11, 2020 08:46 AM IST The survey also found out that for every RT-PCR confirmed case of Covid-19, there were 82-130 infections in India. The high infection to case ratio in India could be on account of the prioritisation of testing among symptomatics or the variability in testing rates across the states. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.