- 问题详情:AnAmericandoctor,GraigSpencer,whoreturnedtoNewYorkCityfromWestAfrica,hastestedpositive(阳*的)forEbola(埃博拉),theNewYorkTimesreported.HewasworkingforanorganizationinGuinea,oneofthethreeWestAfricancountrieshardesthitbyEbola.DoctorSpencerwenttoGu...
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