Home An London ambulance worker has his mask adjusted from an ambulance at the St Thomas’ Hospital on March 31, 2020 in London, England. (Photo by Justin Setterfield/Getty Images) An London ambulance worker has his mask adjusted from an ambulance at the St Thomas' Hospital on March 31, 2020 in London, England. (Photo by Justin Setterfield/Getty Images)

An London ambulance worker has his mask adjusted from an ambulance at the St Thomas’ Hospital on March 31, 2020 in London, England. (Photo by Justin Setterfield/Getty Images)

LONDON, UNITED KINGDOM – MARCH 31: An London ambulance worker has his mask adjusted from an ambulance at the St Thomas’ Hospital on March 31, 2020 in London, England. Hospitals across London are facing a surge in demand for critical care due to The Coronavirus (COVID-19) pandemic. (Photo by Justin Setterfield/Getty Images)

Commuters wear protective masks while riding a subway train during evening peak on March 31, 2020 in Shanghai, China. (Photo by Yves Dean/Getty Images)
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