An outbreak of hepatitis B in a nursing home.
D000368:Aged; D002353:Carrier State / Q000382:microbiology; D004196:Disease Outbreaks; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology* / Q000635:transmission; D006801:Humans; D008875:Middle Aged; D009735:Nursing Homes; D009864:Ontario