Protesters take part in a demonstration against the Austrian government's measures taken in order to limit the spread of the coronavirus, on December 12, 2021 in Innsbruck, Austria, amidst the novel coronavirus / Covid-19 pandemic. The Innsbruck demonstration is only one in a string of huge weekend protests since Austria in November 2021 became the first EU country to say it would make Covid vaccinations mandatory. (Photo by Daniel Liebl/APA/AFP Photo)





A Venezuelan migrant child raises a toy at the police after her family was told to break up the camp along the seashore where they are living in El Morro, a neighborhood of Iquique, Chile, Sunday, December 12, 2021. (Photo by Matias Delacroix/AP Photo)





Central American migrants face police from the Secretariat of Citizen Security (SSC), who impeded their advance, in Mexico City, Mexico, 12 December 2021. About 500 Central Americans from the migrant caravan that left Chiapas more than a month and a half ago arrived in Mexico City where they found a police blockade against which they faced with sticks and stones. (Photo by Madla Hartz/EPA/EFE)





Maria de la Luz Flores holds a sign about her daughter Guadalupe Morales Flores, who she said disappeared on Sept. 7, 2020 before her body was found on March 29, 2021, during a protest demanding answers about people who go missing outside the National Palace in Mexico City, Monday, December 13, 2021. (Photo by Marco Ugarte/AP Photo)





Farmers gather with tractors in Rozenburg near Schiphol Airport, the Netherlands, 13 December 2021, to offer the airport a buyout contract. Amid government plans to cut nitrogen pollution by buying out farmers and reducing agricultural production, the convoy travelled to Schiphol to deliver a contract to buy out and decommission the airport, equally responsible for pollution, according to the farmers. (Photo by Ramon van Flymen/EPA/EFE)





Australian Prime Minister Scott Morrison, left, looks at a hazard suit during a tour at the Peter Doherty Institute for Infection and Immunity in Melbourne, Tuesday, December 14, 2021. Australia's government said Tuesday it plans to start making mRNA vaccines at home with a new plant that could produce up to 100 million doses each year. (Photo by Andrew Henshaw/AAP Image via AP Photo)





People register for COVID-19 vaccination at Soweto's Baragwanath hospital, South Africa, Monday December 13, 2021. South Africa's 7-day rolling average of daily new COVID-19 cases has risen over the past two weeks from 7.60 new cases per 100,000 people on Nov. 28 to 32.71 new cases per 100,000 people on Dec. 12, according to Johns Hopkins University. In general, the new omicron cases have resulted in milder cases, with fewer hospitalizations and less severe cases requiring oxygen or intensive care. (Photo by Jerome Delay/AP Photo)





A man wears a face mask while walking in an empty street in the financial district, known as The City, in London, Monday, December 13, 2021. While many people will re-start working from home, the British government raised the country's official coronavirus threat level on Sunday, warning the rapid spread of omicron “adds additional and rapidly increasing risk to the public and health care services” at a time when COVID-19 is already widespread. (Photo by Alberto Pezzali/AP Photo)





A healthcare worker mans a COVID-19 testing tent along 5th avenue amid the spread of the coronavirus disease (COVID-19) in New York City, New York, U.S., December 13, 2021. (Photo by Mike Segar/Reuters)





People stand beside the border of flooded area near the Ebro River in the small village of Pradilla de Ebro, Aragon province, northern Spain, Monday, December 13, 2021. Heavy rain has led to flooding in northern Spain. (Photo by Alvaro Barrientos/AP Photo)





An Afghan boy carrying musical instruments disembarks from an airplane at Lisbon military airport, Monday, December 13, 2021. A group of 273 students, faculty members and their families from the Afghanistan National Institute of Music arrived Monday in Portugal, where they are being granted asylum and where they hope to rebuild their acclaimed school. (Photo by Armando Franca/AP Photo)





Big wave surfer Lucas Chianca Chumbo of Brazil rides a wave during the TUDOR Nazare Tow Surfing Challenge at Praia do Norte on December 13, 2021 in Nazare, Portugal. (Photo by Octavio Passos/Getty Images)





People wearing masks and costumes wait before performing in a show of winter traditions at the Village Museum in Bucharest, Romania, Sunday, December 12, 2021. In pre-Christian rural traditions, dancers wearing colored costumes or animal furs, toured from house to house in villages singing and dancing to ward off evil. (Photo by Vadim Ghirda/AP Photo)





A worker gives a paint touch-up to a part of the Supertree structure at the Gardens by the Bay in Singapore on December 13, 2021. (Photo by Roslan Rahman/AFP Photo)





(L-R) Scarlett Johansson and Matthew McConaughey attend the premiere of Illumination's “Sing 2” on December 12, 2021 in Los Angeles, California. (Photo by Emma McIntyre/Getty Images)





People ride a merry-go-round at a Christmas market in Red Square in Moscow, Russia on December 12, 2021. (Photo by Maxim Churusov/TASS)





An actor holds a fake baby while waiting for the Wintershall Nativity play dress rehearsal to begin at Wintersall Estate on December 12, 2021 in Guildford, England. The Nativity play, which tells the story of the birth of Jesus Christ, has been performed annually since 1990 over the Christmas period by the Wintershall players. (Photo by Hollie Adams/Getty Images)





The waxing Moon sets behind the dome of the Old College at the University of Edinburgh, Scotland on Sunday, December 12, 2021. (Photo by Jane Barlow/PA Images via Getty Images)