Outbreak of viral gastroenteritis--Pennsylvania and Delaware.
D003691:Delaware; D004196:Disease Outbreaks; D005759:Gastroenteritis / Q000453:epidemiology* / Q000382:microbiology; D006801:Humans; D007053:Ice / Q000009:adverse effects*; D010414:Pennsylvania; D014771:Virion / Q000302:isolation & purification; D014777:Virus Diseases / Q000453:epidemiology*; D014871:Water Microbiology
D007053:Ice