Analysis of oral polio vaccine CHAT stocks

Molecular analyses of oral polio vaccine samples.

It has been suggested that the human immunodeficiency virus (HIV), and thus the acquired immunodeficiency syndrome (AIDS) it causes, was inadvertently introduced to humans by the use of an oral polio vaccine (OPV) during a vaccination campaign launched by the Wistar Institute, Philadelphia, PA, USA, in the Belgian Congo in 1958 and 1959. The "OPV/AIDS hypothesis" suggests that the OPV used in t...

Oral polio vaccine: fact versus fiction.

The author of this article has now become the principal target of the accusation that HIV-1 was introduced into man through the wildcat production of an oral polio vaccine in chimpanzee cell culture more than 40 years ago in the Belgian Congo. The putative evidence presented in support of this accusation rests essentially on testimonials by local witnesses. Such an accusation is strongly reject...

Live Oral Poliovirus Vaccine after DPT Polio Vaccine.

In the editorial note on Controlled Drugs which I contributed to the issue of September 9 (Canad. M. A. J., 85: 661, 1961), I find that I have overstated the case for written prescriptions for the amphetamines and the barbiturates. Pharmacists may dispense Controlled Drugs on the strength of a prescription given verbally by a physician as well as by a prescription in writing. The pharmacist mus...

Monovalent oral polio vaccine: Gates Foundation funds new polio vaccine to accelerate eradication efforts.

CHAT oral polio vaccine was not the source of human immunodeficiency virus type 1 group M for humans.

A book published in 1999 hypothesized that the scientists who worked with the CHAT type 1 attenuated poliomyelitis strain, tested in the former Belgian Congo in the late 1950s, had covertly prepared the vaccine in chimpanzee kidney cells contaminated with a simian immunodeficiency virus, which evolved into human immunodeficiency virus type 1 group M. This article summarizes the results of the i...