发布时间:2020-11-30 作者: 奈特英语
A medical worker gives a child a dose of polio vaccine in Sanaa, Yemen, on Nov. 28, 2020. Yemen's health authorities on Saturday launched a polio vaccination campaign for more than 4 million children in the north of the war-torn country. The three-day campaign is supported by the World Health Organization, the UNICEF and other international aid agencies, the local health authorities said in a statement. (Photo by Mohammed Mohammed/Xinhua)
Children look at a poster promoting the polio vaccination in Sanaa, Yemen, on Nov. 28, 2020. Yemen's health authorities on Saturday launched a polio vaccination campaign for more than 4 million children in the north of the war-torn country. The three-day campaign is supported by the World Health Organization, the UNICEF and other international aid agencies, the local health authorities said in a statement. (Photo by Mohammed Mohammed/Xinhua)
A medical worker gives a child a dose of polio vaccine in Sanaa, Yemen, on Nov. 28, 2020. Yemen's health authorities on Saturday launched a polio vaccination campaign for more than 4 million children in the north of the war-torn country. The three-day campaign is supported by the World Health Organization, the UNICEF and other international aid agencies, the local health authorities said in a statement. (Photo by Mohammed Mohammed/Xinhua)
A medical worker marks a child's finger after giving her a dose of polio vaccine in Sanaa, Yemen, on Nov. 28, 2020. Yemen's health authorities on Saturday launched a polio vaccination campaign for more than 4 million children in the north of the war-torn country. The three-day campaign is supported by the World Health Organization, the UNICEF and other international aid agencies, the local health authorities said in a statement. (Photo by Mohammed Mohammed/Xinhua)
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