HHS Secretary Robert F. Kennedy Jr. makes his way to the inaugural Great American Farmers Market on the National Mall on August 4. Tom Williams/CQ Roll Call via AP

The gunman who opened fire on the US Centers for Disease Control and Prevention on Friday was, according to law enforcement officials and others who knew him, obsessed with a belief that the coronavirus vaccine had harmed him.

Police said the suspect, 30-year-old Patrick Joseph White, launched his attack from inside a CVS drugstore directly across from the CDC’s main entrance in Atlanta. No CDC employees or civilians were injured, but he struck several CDC buildings and killed a DeKalb County Police officer. White was then found dead in the store, where five guns were recovered, according to a report from the Justice Department. It was unclear whether he killed himself or was wounded in........

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