In August of 1918, a horrific second wave of the Spanish Flu crashed across the world. In this episode, the third of a four-part series exploring hydroxychloroquine and COVID-19, I’ll explore this single moment in time, through the mysterious origins of the Spanish Flu and historiographical controversies, scientific missions to mass burial sites in remote Alaskan villages, the ill-fated journey of the HMS Mantua, debates about how to count victims of a pandemic, and the mystery behind Pfeiffer’s bacillus. Plus a new #AdamAnswers about that annoying yellow on blue powerpoint template so common in the medical field!   Sources: Viboud, C. et al. Age- and Sex-Specific Mortality Associated With the 1918–1919 Influenza Pandemic in Kentucky. J Infect Dis 207, 721–729 (2013). Oxford, J. S. & Gill, D. A possible European origin of the Spanish influenza and the first attempts to reduce mortality to combat superinfecting bacteria: an opinion from a virologist and a military historian. Hum Vacc Immunother 15, 2009–2012 (2019). Epps, H. L. V. Influenza: exposing the true killer. J Exp Medicine 203, 803–803 (2006). Patterson, S. W. & Williams, F. E. PFEIFFER’S BACILLUS AND INFLUENZA. Lancet 200, 806–807 (1922). Taubenberger, J. K. & Morens, D. M. The 1918 Influenza Pandemic and Its Legacy. Csh Perspect Med a038695 (2019) doi:10.1101/cshperspect.a038695. Trilla, A., Trilla, G. & Daer, C. The 1918 “Spanish Flu” in Spain. Clin Infect Dis 47, 668–673 (2008). Taubenberger, J. K. The origin and virulence of the 1918 “Spanish” influenza virus. P Am Philos Soc 150, 86–112 (2006). Heinz, E. The return of Pfeiffer’s bacillus: Rising incidence of ampicillin resistance in Haemophilus influenzae. Microb Genom 4, (2018). Barry, J. M. The site of origin of the 1918 influenza pandemic and its public health implications. J Transl Med 2, 3 (2004). Johnson, N. P. A. S. & Mueller, J. Updating the Accounts: Global Mortality of the 1918-1920 “Spanish” Influenza Pandemic. B Hist Med 76, 105–115 (2002).   Tomkins SM, Colonial Administration in British Africa during the Influenza Epidemic of 1918-19. Canadian Journal of African Studies / Revue Canadienne des Études Africaines. Vol. 28, No. 1 (1994