'There is no evidence', says China scientist at centre of lab leak theory

Shi Zhengli says speculation about her lab in Wuhan was baseless and like 'constantly pouring filth'. China's secrecy makes her claims hard to validate.

To a growing chorus of American politicians and scientists, she is the key to whether the world will ever learn if the virus behind the devastating Covid-19 pandemic escaped from a Chinese lab. To the Chinese government and public, she is a hero of the country’s success in curbing the epidemic and a victim of malicious conspiracy theories.

Shi Zhengli, a top Chinese virologist, is once again at the center of clashing narratives about her research on coronaviruses at a state lab in Wuhan, the city where the pandemic first emerged.

The idea that the virus may have escaped from a lab