8个国家已在过去6个月里报告了输入性脊髓灰质炎病毒的传播：安哥拉、乍得、埃塞俄比亚、印度尼西亚、尼泊尔、尼日尔、索马里和也门。
Eight countries have reported circulation of imported poliovirus in the past six months: Angola, Chad, Ethiopia, Indonesia, Nepal, Niger, Somalia and Yemen.
8个国家已在过去6个月里报告了输入性脊髓灰质炎病毒的传播：安哥拉、乍得、埃塞俄比亚、印度尼西亚、尼泊尔、尼日尔、索马里和也门。
Eight countries have reported circulation of imported poliovirus in the past six months: Angola, Chad, Ethiopia, Indonesia, Nepal, Niger, Somalia and Yemen.
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