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What Fauci has said about COVID origins and gain-of-function research in his spat with Rand Paul
Updated on: August 6, 2026 / 9:15 AM EDT / CBS News
TL;DR
- Sen. Rand Paul has accused Dr. Anthony Fauci of downplaying the lab leak theory for COVID-19 and misleading Congress about federally funded research in Wuhan.
- Fauci denies these allegations, stating he has always kept an open mind about the virus's origins and that the research funded in Wuhan did not constitute dangerous gain-of-function research.
- The 'lab leak' theory suggests COVID-19 may have accidentally escaped from the Wuhan Institute of Virology, rather than naturally jumping from animals to humans.
- Gain-of-function research involves modifying viruses to study their evolution, a practice that opponents deem risky and proponents argue is crucial for pandemic preparedness.
- The U.S. intelligence community and the World Health Organization have offered mixed conclusions on the precise origins of the virus, with some agencies favoring a natural origin and others a lab incident.
- Fauci has stated that the viruses studied under federal grants in Wuhan were too genetically distinct from SARS-CoV-2 to have been manipulated to create the pandemic virus.
- Paul has cited diary entries from Fauci discussing early debates among experts about the virus's potential unnatural origins and the possibility of deliberate insertion of mutations.