The chance that COVID-19 originated from a laboratory can’t be ruled out, the former head of the Chinese Center for Disease Control and Prevention (China CDC) said.
George Gao, who headed China CDC during the COVID-19 pandemic, also claimed Chinese officials have investigated the Wuhan Institute of Virology (WIV) to find out whether SARS-CoV-2, the virus that causes COVID-19, was leaked from the lab.