In this April 14, 2014 file photo, Hamamatou Harouna, 10, who lost the use of her legs to polio, crawls to the restroom on the grounds of the Catholic Church where she and hundreds of others found refuge after fleeing violence in her village, in Carnot, Central African Republic. Health authorities on Tuesday, August 25, 2020 are expected to declare the African continent free of the wild poliovirus after decades of effort, though cases of vaccine-derived polio are still sparking outbreaks of the paralyzing disease in more than a dozen countries. (Photo by Jerome Delay/AP Photo/File)

Alligators and an egret stand on the banks of the Bento Gomes river next to the Transpantaneira road at the Pantanal wetlands near Pocone, Mato Grosso state, Brazil, Monday, September 14, 2020. A vast swath of the vital wetlands is burning in Brazil, sweeping across several national parks and obscuring the sun behind dense smoke. (Photo by Andre Penner/AP Photo)

Cars and a motorcycle are underwater as water floods a street, Wednesday, September 16, 2020, in Pensacola, Fla. (Photo by Gerald Herber/AP Photo)

Groups of youngsters are still heading out on the lash in Newcastle’s city centre on October 3, 2020 despite being just minutes away from the UK’s largest single Covid outbreak – Northumbria University confirms 770 cases among students. (Photo by North News and Pictures/The Sun)

Young women dance a group dance at the Palace Square in St.Petersburg, Russia, Thursday, September 24, 2020. (Photo by Dmitri Lovetsky/AP Photo)

Villagers riding a rickshaw maneuver along an overflowing dam at the border between Cavite province and Las Pinas city, in Las Pinas, Philippines, 25 October 2020. According to Philippine Atmospheric Geophysical and Astronomical Services Administration (PAGASA), Typhoon Molave will make landfall in the evening of 25 October in southern Luzon island. An alert was issued to residents for possible floods and landslides. (Photo by Francis R Malasig/EPA/EFE)

People visit a cemetery during the celebrations of the Guede, the traditional festival of the dead and one of the main festivities of voodoo, in Port-au-Prince, Haiti, 01 November 2020. (Photo by Jean Marc Herve Abelard/EPA/EFE)

Passengers wears a face mask while riding on a bus after new cases of COVID-19 were reported in Peshawar, Pakistan, 18 November 2020. Countries around the world are taking increased measures to stem the widespread of the Covid-19 disease. (Photo by Arshad Arbab/EPA/EFE/Rex Features/Shutterstock)