Infectious agents and host responses.
D000818:Animals; D001419:Bacteria; D001432:Bacteriology / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007239:Infections / Q000188:drug therapy / Q000266:history* / Q000276:immunology; D012955:Societies, Medical / Q000266:history; D014481:United States; D014773:Virology / Q000266:history*; D014780:Viruses