[caption id="attachment_8263" align="alignnone" width="976"] Walkers wear protective face masks at St Kilda pier in Melbourne after it became the first city in Australia to enforce...

[caption id="attachment_8248" align="alignnone" width="967"] A person walks on the street wearing a protective mask during the first day of their mandatory use everywhere regardless of...

[caption id="attachment_8226" align="alignnone" width="966"] Healthcare workers talk to a resident near the house of a COVID-19 patient as they investigate infection links in Hanoi, Vietnam...

[caption id="attachment_8251" align="alignnone" width="969"] FILE PHOTO: A logo is pictured on the headquarters of the World Health Orgnaization (WHO) in Geneva, Switzerland, June 25, 2020....

[caption id="attachment_8266" align="alignnone" width="967"] FILE PHOTO: Mount Everest, the world's highest peak, and other peaks of the Himalayan range are seen through an aircraft window...

[caption id="attachment_8088" align="alignnone" width="960"] FILE PHOTO: A woman holds a small bottle labeled with a "Vaccine COVID-19" sticker and a medical syringe in this illustration...

[caption id="attachment_8112" align="alignnone" width="964"] FILE PHOTO: An ambulance arrives at the 28 de Agosto hospital during the coronavirus disease (COVID-19) outbreak, in Manaus, Brazil, April...

[caption id="attachment_8098" align="alignnone" width="973"] FILE PHOTO: U.S. House Speaker Nancy Pelosi listens during a news conference ahead of House votes on "the Child Care Is...