The shooting in Atlanta, which killed a police officer, followed the spread of false information around Covid vaccines and animosity directed at the agency, public health workers say.

"Kennedy is directly responsible for the villainization of CDC's workforce through his continuous lies about science and vaccine safety, which have fueled a climate of hostility and mistrust," one ex-employee wrote, according to the Associated Press news agency.

A Georgia man who opened fire on the U.S. Centers for Disease Control and Prevention headquarters, shooting dozens of rounds into the sprawling complex and killing a police officer, had blamed the COVID-19 vaccine for making him depressed and suicidal,