Task: Answer Verification
Input (English): Question: Are health care workers in Pearl River Delta Area of China vaccinated adequately against hepatitis B : a retrospective cohort study?
Answer: The vaccination rate was a disappointingly low among HCWs in Pearl River Delta Area of China. HCWs working in infectious diseases departments and technicians were at particularly likely to have been infected with HBV. A concerted effort is needed to bring vaccination rates up among Chinese HCWs in Pearl River Delta Area of southern China.
Output (English): no