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A woman (front) receives oxygen therapy at a temporary shelter after being exposed to smoke haze from a forest fire in Riau, Indonesia, Sept. 22, 2019. (Photo by Hadly Vavaldi/Xinhua)

A woman (front) receives oxygen therapy at a temporary shelter after being exposed to smoke haze from a forest fire in Riau, Indonesia, Sept. 22, 2019. (Photo by Hadly Vavaldi/Xinhua)