Context.— Poliovirus vaccine contaminated with live simian virus 40 (SV40), a macaque polyomavirus that is tumorigenic in rodents, was used extensively in the United States between 1955 and 1963....

There is a concern that massive vaccination against polio between 1954 and 1962 in the United States might have resulted in the unintentional exposure of millions of people to SV40 through contamin...

Context.— Poliovirus vaccine contaminated with live simian virus 40 (SV40), a macaque polyomavirus that is tumorigenic in rodents, was used extensively in the United States between 1955 and 1963....

On any list of medical triumphs of the 20th century, polio vaccination is sure to rate a mention. In the 1950s and early 1960s, the shot and sugar-cube vaccines of Jonas Salk, and later Albert Sabin,...

From time to time reports of temporal associations between immunisation of young children with various agents and the onset of neurological events, some leading to permanent neurological damage, have...

Abstract. Background: Early poliovirus vaccines were accidentally contaminated with simian virus 40 (SV40). In Denmark, poliovirus vaccine was administered to m

If you think you've suffered secondary encephalitis as the result of a vaccine, contact us at 888.952.5242. there's never a fee to take your case.

A victim of Polio vaccine injury, 65-yearl old Cynthia Grady tells the story of years of distress, misdiagnosis and health problems and the CDCs 50 years of cover-up and wrongdoing.