北京市丰台区老年人免费流感疫苗接种效果评价

姜晓飞, 唐田, 毛雯雯

Evaluation on effectiveness of free influenza vaccination among the elderly in Fengtai District of Beijing

JIANG Xiao-fei, TANG Tian, MAO Wen-wen

实用预防医学 . 2022, (9): 1068 -1071 . DOI: 10.3969/j.issn.1006-3110.2022.09.011