An Active Search for AFP Cases in the Contiguous Region of Yunnan and Sichuan Provinces in 2002 and Analysis on Supplementary lmmunization of Oral Polio Vaccine

• 云南省2002年与四川省毗邻地区急性弛缓性麻痹病例主动搜索及口服脊髓灰质炎疫苗强化免疫结果分析