Diseases, Disorders, Illnesses
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New infections identified since 1918The timeline below includes just a selection of the new diseases that emerged during 20th and early 21st centuries.
NB: Dates refer to when an infectious agent was identified or an infectious disease first described. Agents may have been present earlier. HIV, for example, probably crossed into humans in the 1930s. 1918: Spanish flu 1937: West Nile virus 1956: Asian flu 1965: EV71 1967: Marburg virus 1968: Hong Kong flu 1969: Lassa fever 1972: Norovirus 1976: Legionnaires’ disease, Ebola virus 1977: Lyme disease 1981: HIV (human immunodeficiency virus) 1986: BSE (bovine spongiform encephalopathy) 1987: Hepatitis C virus 1993: Hantavirus pulmonary syndrome 1996: vCJD (variant Creuzfeldt–Jakob disease) 1998: Nipah virus 2002: SARS (severe acute respiratory syndrome) 2003: Human H5N1 avian flu 2005: Chikungunya virus 2006: XDR-TB (extensively drug-resistant tuberculosis) 2012: MERS (Middle East respiratory syndrome) From BigPicture |