1918 pandemic influenza and pneumonia in a large civil hospital.
D004196:Disease Outbreaks / Q000266:history*; D005260:Female; D006801:Humans; D007087:Illinois; D007251:Influenza, Human / Q000453:epidemiology / Q000266:history*; D009975:Orthomyxoviridae / Q000302:isolation & purification; D011014:Pneumonia / Q000453:epidemiology / Q000266:history*; D011247:Pregnancy