A man and woman wearing masks to help protect themselves from the coronavirus share a smartphone on the street in Wuhan in central China's Hubei province on Thursday, Jan. 14, 2021. A global team of researchers for the World Health Organization arrived Thursday in the Chinese city where the coronavirus pandemic was first detected to conduct a politically sensitive investigation into its origins amid uncertainty about whether Beijing might try to prevent embarrassing discoveries. (AP Photo/Ng Han Guan)

Orange County resident Esther Song expresses her gratitude with a "Love" gesture after getting her vaccine at the Disneyland Resort serving as a Super POD (Point Of Dispensing) COVID-19 mass vaccination site Wednesday, Jan. 13, 2021, in Anaheim, Calif. The parking lot is located off Katella Avenue and sits southeast of Disneyland. California is immediately allowing residents 65 and older to get scarce coronavirus vaccines, Gov. Gavin Newsom announced Wednesday. (AP Photo/Damian Dovarganes)

A woman passes a government conronavirus advert in central London, during England's third national lockdown to curb the spread of coronavirus, Thursday, Jan. 14, 2021. (Dominic Lipinski/PA via AP)

Walgreens pharmacist Chris McLaurin prepares to vaccinate Lakandra McNealy, a Harmony Court Assisted Living employee, with the Pfizer-BioNTech COVID-19 vaccine, Tuesday, Jan. 12, 2021, in Jackson, Miss. The Mississippi State Department of Health reports there have been 9,796 cases of the coronavirus in long-term care facilities and 1,791 deaths as of Tuesday. (AP Photo/Rogelio V. Solis)

A health worker prepares to give the COVID-19 vaccine to a government official in Medan, North Sumatra, Indonesia, Thursday, Jan. 14, 2021. Indonesia started vaccinating health workers and public servants against COVID-19 on Thursday, a day after President Joko Widodo received the first shot of China's Sinovac Biotech vaccine. The Health Ministry is planning to vaccinate more than 1.3 millions health workers and 17.4 millions public officers in the first stage in the world's fourth most populated country. (AP Photo/Binsar Bakkara)

Medical personnel administer a dose of the Pfizer-Biotech vaccine to an elderly woman in a nursing home, in Rome, Wednesday, Jan. 13, 2021. Italy’s vaccination program is moving faster than its original timetable, with persons older than 80 already starting to receive their first injection this week instead of in early February. By Thursday evening, more than 900,000 people in Italy, a country of 60 million, had received a shot of one of the two vaccines so far approved for use by the European Union. (Cecilia Fabiano/LaPresse via AP)

FILE - In this Jan. 7, 2021, file photo, medical workers wait in the holding area after getting the Pfizer-BioNTech COVID-19 vaccine at St. Joseph Hospital in Orange, Calif. The rapid expansion of vaccinations to senior citizens across the U.S. has led to bottlenecks, system crashes and hard feelings in many states because of overwhelming demand for the shots. (AP Photo/Jae C. Hong, File)

People wearing protective masks to help curb the spread of the coronavirus wait for a traffic light near banners reading " Stay Home" hoisted along a shopping street in Tokyo Thursday, Jan. 14, 2021. The Japanese capital confirmed more than 1500 new coronavirus cases on Thursday. (AP Photo/Eugene Hoshiko)

Nun Reyna Vasquez, worker at El Buen Pastor religious nursing home is vaccinated with Pfizer coronavirus vaccine, in Pamplona, northern Spain, Thursday Jan. 14. 2021. (AP Photo/Alvaro Barrientos)

Mayor Lori Lightfoot, left, and Chicago Public Schools CEO Janice Jackson, second from left, visit a preschool classroom at Dawes Elementary School in Chicago, Monday, Jan. 11, 2021. Monday was the first day of optional in-person learning for preschoolers and some special education students in Chicago Public Schools after going remote last March due to the coronavirus pandemic. (Ashlee Rezin Garcia/Chicago Sun-Times via AP, Pool)

The Armory, an indoor track and field complex, is being set up as a COVID-19 vaccination center, Thursday, Jan. 14, 2021, in New York. The site is run by New York-Presbyterian Hospital and vaccinations are available by appointment through vaccinetogetherny.org. (AP Photo/Mark Lennihan)