O Sfetcu, D Cremenasiu, S Circiumaru,
Hunedoara Health District; M Barhala, R Florescu, E Duca, Iasi
Health District; A Cojan, E Marialaky, MM Yanku, Mures Health
District; M Irimia, A Dobrescu, Prahova Health District; M Popa, N
Ion-Nedelcu, D Craciun, Dept of Preventive Medicine, Ministry of
Health, Romania. Hepatitis Br, Div of Viral and Rickettsial Diseases,
National Center for Infectious Diseases; and an EIS Officer, CDC.