病例起源于16个北方州，其中东北部几个州(包奇州、贡贝州和约比州)在流行期最后一周内受影响最严重。
Cases originate from 16 Northern states, with states of the North East (Bauchi, Gombe and Yobe) being the most affected in the final week of the period.
尼日尔南部有个叫做多贡杜奇（Dogondoutchi）的偏远小镇，在小镇附近的一条乡村公路上，我们碰到了正在向北迁移的特瓦瑞格族游牧民一家。
On a rural road near the remote town of Dogon Doutchi, in southern Niger, we ran into a family of Tuareg nomads traveling north.
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