番茄社区

MONROEVILLE, Pa.-About 200 patients who underwent colonoscopy at a Pittsburgh-area hospital were urged to undergo hepatitis and HIV testing because the colonoscopes were improperly disinfected.

A study of native Alaskans published in the Annals of Internal Medicine determined that vaccine-conferred immunity to hepatitis B virus persists on average about fifteen years after vaccination. The study has implications for determining effectiveness and duration of vaccine protection and possible need for booster shots.