mass immunization meaning in English

大规模免疫法
大规模免疫接种

Analysis of the results of measles vaccine mass immunization campaign in shandong province
山东省麻疹疫苗强化免疫结果分析
Epidemiological evaluation on the effect of measles vaccine mass immunization campaign in shandong province
山东省麻疹疫苗强化免疫效果的流行病学评价
Analysis on the effect of measles catch up mass immunization campaign in three areas of hebei province
河北省石家庄等三市麻疹疫苗初始强化免疫效果分析