英语语法分析

In most of Africa, national and targeted subnational immunization campaigns are helping to sharply reduce the number of polio cases.

在非洲多数地方，全国性及锁定特定地区的免疫活动，有助于大幅减少小儿痲痹病例数。

Due to gaps in the quality of acute flaccid paralysis (AFP) surveillance at subnational levels, additional undetected WPV circulation cannot be ruled out.

由于国家级以下的急性弛缓性麻痹监测质量存有差距，因此尚不能排除存在未经发现的野生脊灰病毒传播情况。

214 geographic markets across Asia Pacific, Latin America, Europe, Middle East, Africa, Developed Economies and subnational data for China, India, Brazil and Russia.

除了亚太、南美、欧洲、中东、非洲各地区、已开发国家之外，也网罗了中国、印度、巴西、俄国地方等214个市场数据。