In 2019, the CIA proved that it had been lying to the public for decades about germ warfare in Korea when it released a trove of signals intelligence documents from the Korean War in a publication called Baptism by Fire: CIA Analysis of the Korean War.
The documents detail communications from CIA listening posts around the world that narrate the People’s Volunteer Army (PVA) of China and the North Korean People’s Army (KFA) responses to U.S. biological warfare (BW) attacks by airplane in North Korea from May 1951 through July 1953.