Coronavirus: Sero survey shows one-fifth of Chennai’s population exposed to COVID-19
The study was conducted after samples from 12,045 people across 51 wards were collected and tested for Coronavirus antibodies. A recent sero survey conducted in Tamil Nadu’s Chennai showed one-fifth population of the city had been exposed to the novel Coronavirus. The sero survey was conducted by the National Institute of Epidemiology and checked the … Read more