Diagnostic criteria for claiming a "case" of poliomyelitis changed the exact same year the polio vaccine was introduced - creating the imediate illusion of the vaccine was "working"!
1955: Did Salk's Polio vaccine reduce polio…
Diagnostic criteria for claiming a "case" of poliomyelitis changed the exact same year the polio vaccine was introduced - creating the imediate illusion of the vaccine was "working"!