A health worker shows an empty syringe after inoculating a woman with AstraZeneca's COVID-19 vaccine during the first day of a nationwide three-day vaccination drive at a school in Quezon city, Philippines on Monday, November 29, 2021. There has been no reported infection so far caused by the new variant in the Philippines, a Southeast Asian pandemic hotspot where COVID-19 cases have considerably dropped to below 1,000 each day in recent days, but the emergence of the Omicron variant has set off a new alarm. (Photo by Aaron Favila/AP Photo)

Revellers make the most of Boxing Day in Liverpool city centre, United Kingdom on Sunday, December 26, 2021. Boxing Day is a holiday celebrated after Christmas Day, occurring on the second day of Christmastide. (Photo by London News Pictures)

A mask seller wearing a mask stands in a street market in Bangkok, Thailand, Tuesday, June 9, 2020. Daily life in capital resuming to normal as Thai government continues to ease restrictions related to running business in capital Bangkok that were imposed weeks ago to combat the spread of COVID-19. (Photo by Gemunu Amarasinghe/AP Photo)

Wearing a protective mask to curb the spread of the new coronavirus a man attends a memorial for those who have died from COVID-19 worldwide, at Rio's Christ the Redeemer statue in Rio de Janeiro, Brazil, Wednesday, July 1, 2020. (Photo by Leo Correa/AP Photo)

Ride operator Van Mai wears a face mask against the spread of the coronavirus while working at the Playland amusement park at the Pacific National Exhibition, in Vancouver, British Columbia, Friday, July 10, 2020. (Photo by Darryl Dyck/The Canadian Press via AP Photo)

Winner – Animal Portraits: The pose by Mogens Trolle, Denmark. A young male proboscis monkey cocks his head slightly and closes his eyes. Unexpected pale blue eyelids now complement his immaculately groomed auburn hair. He poses for a few seconds as if in meditation. He is a wild visitor to the feeding station at Labuk Bay Proboscis Monkey Sanctuary in Sabah, Borneo – “the most laid-back character”, says Trolle, “quite unlike anything I’ve ever seen on another monkey” – connects us, he hopes, with a fellow primate. (Photo by Mogens Trolle/Wildlife Photographer of the Year 2020)

(L-R) Pieter Van Lankveld, Jay Schippers, Ynze Oegema, Justin Kimmann, Teun Kivit and Twan Van Gendt compete during the Dutch National BMX Championships at Olympic Training Centre Papendal on October 11, 2020 in Arnhem, Netherlands. (Photo by Dean Mouhtaropoulos/Getty Images)

Residents of the Santa Marta favela, Botafogo, south zone in Rio de Janeiro, Brazil unite to sanitize the community and fight the advance of the new coronavirus this Saturday, November 28, 2020. (Photo by Ellan Lustosa/ZUMA Wire/Rex Features/Shutterstock)