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Editorial: Polio is down but not out

作者:庆汕    发布时间:2019-03-02 11:14:11    

A SECOND case of polio reported in Saudi Arabia has not dented the confidence of officials at the World Health Organization that it can eradicate the virus this year. Saudi Arabia, which has a high vaccination rate and good sanitation, had been free of the disease since 1995. Both cases, which were identified late last year, look as though they were imported from Africa. In Africa polio is endemic in only three countries: Egypt, Niger and Nigeria. But over the past 18 months, travellers from these countries have re-infected 12 previously “clean” nations, including Chad,

 

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