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> RECORD OBS-0132 | status: DEBUNKED | filed 2026-07-31
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Hepatitis B vaccine theory

RecordOBS-0132
CategoryHealth/Vaccines
StatusDEBUNKED
SummaryAlan Cantwell, a dermatologist, claimed that HIV was a genetically modified organism developed by U.S. government scientists and introduced through hepatitis B vaccine trials on gay and bisexual men. This theory is unsupported by evidence.
OriginProposed by Alan Cantwell in self-published books in 1988 and 1993.
Claimed
  • HIV is a genetically modified organism created by U.S. government scientists.
  • The virus was introduced through hepatitis B vaccine experiments on gay and bisexual men.
Evidence / consensusThere is no evidence that HIV was genetically engineered or spread through hepatitis B vaccines. HIV's origins are zoonotic, and the hepatitis B vaccine is safe.
> OBSERVER NOTE:
A conspiracy theory with no scientific backing. The claim of genetic modification is contradicted by the virus's clear evolutionary relationship to SIV.

Sources

  1. Discredited HIV/AIDS origins theories - Wikipedia

Sources are external and provided for verification. Listing does not imply the Observer endorses their claims.