evidence: A caption from one user who shared the post on Facebook reads, "Dr Fauci wrote a paper regarding the Spanish Flu and stated that the majority of deaths in 1918-1919 was because of bacterial pneumonia from wearing masks." [...] J. Alexander Navarro, assistant director at the Center for the History of Medicine at the University of Michigan and co-editor in chief of the "American Influenza Epidemic of 1918-1919" digital encyclopedia, called the claim that masks caused bacterial pneumonia "absolutely preposterous." [...] Posts online claim Fauci wrote a 2008 study blaming the majority of deaths in the 1918-19 influenza pandemic on bacterial pneumonia from wearing masks.