摘要：The Victorian Infectious Diseases Unitreceived three notifications of hepatitisA between 17 and 20 October 1997from a general practitioner in theeastern suburbs of Melbourne. Thethree cases were all young males whoattended the same primary school, butwere also members of the local juniorfootball club. An earlier case notifiedwas also a member of the football club, but attended a different school. Activesurveillance was initiated through theclub and the affected schools
