A man is seen in a natatorium in Mexico City, Mexico, Aug. 10, 2020. Some natatoriums in Mexico City have reopened to the public with epidemic prevention measures. (Photo by Ricardo Flores/Xinhua)

Two women talk in a natatorium in Mexico City, Mexico, Aug. 10, 2020. Some natatoriums in Mexico City have reopened to the public with epidemic prevention measures. (Photo by Ricardo Flores/Xinhua)

Epidemic prevention personnel walk out of a natatorium in Mexico City, Mexico, Aug. 10, 2020. Some natatoriums in Mexico City have reopened to the public with epidemic prevention measures. (Photo by Ricardo Flores/Xinhua)