职业人群乙型肝炎感染情况调查河南省郑州市职业病防治所（４５００５３）焦贤芳，刘素香，张育红接触职业性有害因素，是否可增加乙肝的感染性？本调查旨在了解职业人群乙肝的感染情况。对象和方法１．调查对象：本市５０个工厂工龄为１～４０年的１９～６０岁接触粉尘（... Occupational population of hepatitis B infection survey Zhengzhou City, Henan Province Occupational Disease Prevention Institute (450053) Jiao Xianfang, Liu Suxiang, Zhang Yuhong exposure to occupational harmful factors, can increase the infectivity of hepatitis B? This survey aims to understand the occupational status of hepatitis B infection. Objects and methods 1. Survey: 50 factories in the city of workers aged 1 to 40 years of 19 to 60 years of contact dust (...