西安医科大学流行病学教研室徐慧文教授等人连续随访观察9年,得出国产血源性乙肝疫苗接种后9年内无需复种的结论。目前该教研室正在着手第10年和第11年的调查工作。 徐慧文等曾对一部分人在乙肝疫苗初种后的第3年进行了复种, Xi’an Medical University, Department of Epidemiology, Professor Xu Huwen continuous follow-up observation of 9 years, come to a conclusion that domestic blood-borne hepatitis B vaccination within 9 years without multiple cropping. Currently, the department is working on the 10th and 11th surveys. Xuhui Wen, who had on some people in the first 3 years after hepatitis B vaccine for multiple cropping,