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A health staff prepares polio vaccine before injection at a public health department in Yangon, Myanmar, Oct. 17, 2019. World Polio Day will fall on Oct. 24. (Photo by U Aung/Xinhua)
A health staff prepares polio vaccine before injection at a public health department in Yangon, Myanmar, Oct. 17, 2019. World Polio Day will fall on Oct. 24. (Photo by U Aung/Xinhua)