Distribution of anti HBs in Christchurch hospital staff.

Three hundred and thirty-eight North Canterbury Hospital Board staff in 11 different job categories have been tested for anti HBs during a two-year period, June 1975 to June 1977. Forty-three sera were positive for anti HBs, 10 following documented hepatitis B, nine following prophylactic anti HBs and 23 without any previous history of hepatitis. 22.4 percent of the medical staff, 10 percent of the nurses, 11.4 percent of the laboratory staff, 36.4 percent of the dental staff tested were positive for anti HBs.