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e coli o157 h7 was first recognized as a cause of illness in 1982 during an outbreak of severe bloody diarrhea

nipah virus was initially isolated in 1999 upon examining samples from an outbreak of encephalitis

health officials inspecting specimens suspected of being connected with a hantavirus outbreak

nurse in an isolation ward during the 1975 marburg outbreak in johannesburg south africa

sanitary procedures being practiced in a kikwit zaire clinic during the countrys 1995 ebola outbreak
