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Unverified

Debunking claim Fauci co-authored paper saying masks caused most Spanish flu deaths

The claim that Fauci co-authored a paper stating that masks caused the majority of Spanish flu deaths is unverified.

Health Science Last checked Sep 19, 2026

Key points

  • No evidence or sources are provided to support this claim.
  • Fauci's work focuses on modern infectious diseases, not the Spanish flu.
  • There is no widely recognized paper by Fauci related to mask causation in the Spanish flu.

Explanation

The claim that Fauci co-authored a paper stating masks caused most Spanish flu deaths lacks supporting evidence. Dr. Anthony Fauci's research and expertise primarily pertain to modern infectious diseases, particularly HIV/AIDS, hepatitis C, and emerging viral threats such as SARS-CoV-2. There is no widely recognized or documented work by Fauci that discusses the causation of the 1918 Spanish flu through mask usage. Without specific references or peer-reviewed papers supporting this claim, it cannot be verified.