Take the state of Kano in northern Nigeria. Five years ago, this state suspended all polio immunization campaigns for two years.
以尼日利亚北部的卡诺州而言，五年之前，该州已经暂停所有的脊灰免疫活动达两年之久。
Take the state of Kano in northern Nigeria. Five years ago, this state suspended all polio immunization campaigns for two years.
以尼日利亚北部的卡诺州而言，五年之前，该州已经暂停所有的脊灰免疫活动达两年之久。
应用推荐