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Few outbreaks of the serious enterovirus 71 (EV71) infections, which affect the central nervous system (CNS), had been reported in Japan before 2000. During June through August 2000, a patient died(More)
We studied the transmission of hepatitis A virus (HAV) in 45 families, which members were diagnosed as hepatitis A in 8 hospitals in 1990. Feces and sera from 50 patients and their 126 family members(More)