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A child cries after she was administered with a polio vaccine during a house to house vaccination exercise in Maiduguri, Nigeria, on Aug. 28, 2016. Health officials in Burundi on Friday March 17, 2023 have declared an outbreak of polio linked to the vaccine, the first time the paralytic disease has been detected in the east African country for more than three decades. Across Africa, there were more than 400 cases of polio last year linked to the oral vaccine, including Congo, Nigeria, Ethiopia and Zambia. (Photo by Sunday Alamba/AP Photo)
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