Of the 20 countries that were endemic in the mid 1980s, only 4 (all on the African continent) are still reporting cases.

上世纪80年代中期曾经流行该病的20个国家中，仅有4个国家(全部在非洲大陆)仍然报告发生病例。

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Of the 20 countries that were endemic in the mid 1980s, only 4 (all on the African continent) are still reporting cases.

上世纪80年代中期曾经流行该病的20个国家中，仅有4个国家(全部在非洲大陆)仍然报告发生病例。

youdao