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A man walks past an informational mural with messages in English and Swahili warning people about the dangers of the new coronavirus and how to prevent transmission, painted by youth artists from the Uweza Foundation, in the Kibera slum, or informal settlement, of Nairobi, Kenya Wednesday, July 8, 2020. Africa now has more than a half-million confirmed coronavirus cases, according to the Africa Centers for Disease Control and Prevention, but the true number of cases among Africa's 1.3 billion people is unknown as its 54 countries face a serious shortage of testing materials for the virus. (Photo by Brian Inganga/AP Photo)
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