Nurses cover their faces with masks to protect from the spread of the swine flu outside the Naypyitaw hospital, Tuesday, July 25, 2017, in Naypyitaw, Myanmar. Public health officials in Myanmar say that H1N1 flu, also known as swine flu, has killed three people out of 13 confirmed cases of the infection. (Photo by Aung Shine Oo/AP Photo)
