CNN —The Covid-19 pandemic has carried a key lesson for public health officials, Dr. Anthony Fauci said Monday: When talking to Americans, be clear that science is often a moving target.
“Hopefully, we could have been more on top of appreciating the dynamic nature of how things change, thinking that it wasn’t aerosol spread in the beginning, and then you find out it is aerosol spread.
Experts agree that the virus almost certainly jumped into humans from an animal market in China but that they may never know for sure.
“It’s possible that there was a lab leak,” Fauci said.
Fauci criticized China’s controversial zero-Covid policy, saying shutdowns “should always be a temporary phenomenon, not a long-range strategy,” and should be done with an end point in mind, such as buying time to secure PPE or provide vaccinations.