Workers of the Federal Agency for Technical Relief (THW) are setting up a vaccination centre in the sports hall of a school in Eschwege, Germany, Tuesday, Dec. 1, 2020. The German government is preparing to roll out a nationwide coronavirus vaccination program. (Sven Pfoertner/dpa via AP)

Iowa Gov. Kim Reynolds updates the state's response to the coronavirus outbreak during a news conference, Thursday, Nov. 19, 2020, in Johnston, Iowa. (AP Photo/Charlie Neibergall)

Alabama Health Officer Dr. Scott Harris speaks during a news conference update on COVID-19 restrictions at the Alabama State Capitol in Montgomery, Ala., on Thursday, Nov. 5, 2020. (Jake Crandall/The Montgomery Advertiser via AP)

Minister of Health Patty Hajdu uses a translation headset as she listens to a speaker via video conference at a news conference Tuesday, Dec. 1, 2020, in Ottawa. (Adrian Wyld/The Canadian Press via AP)

A hazardous goods worker shows how dry ice is used on specific vaccines and medicines to keep them cool during a demonstration of logistics and handling of vaccines and medicines at the DHL cargo warehouse in Steenokkerzeel, Belgium, Tuesday, Dec. 1, 2020. European Commission President Ursula von der Leyen said Tuesday that member states have started working on their vaccination plans and on the logistics for the delivery of tens of millions of doses across the 27-nation bloc. Safely delivering COVID-19 vaccines, once approval has been made, will be the mission of the century for the global air cargo industry. (AP Photo/Virginia Mayo)

FILE - In this Aug. 3, 2020, file photo, a member of the Nevada National Guard installs social distancing stickers while setting up a new temporary coronavirus testing site in Las Vegas. Nevada health officials have reported 1,642 new coronavirus cases and eight additional deaths on Monday, Nov. 30, 2020. Officials are warning that the statewide surge shows few signs of slowing as the deadliest month of the pandemic so far is ending. (AP Photo/John Locher, File)

FILE - In this March 16, 2020, file photo, vials used by pharmacists to prepare syringes used on the first day of a first clinical trial of the potential vaccine for COVID-19 rest on a lab table at the Kaiser Permanente Washington Health Research Institute in Seattle. An influential scientific panel on Tuesday, Dec. 1, is set to tackle one of the most pressing questions in the U.S. coronavirus epidemic: When the first doses of COVID-19 vaccine become available, who should be at the front of the line for shots? (AP Photo/Ted S. Warren, File)

FILE - In this Saturday, Nov. 28, 2020 file photo Mercedes driver Lewis Hamilton of Britain gestures after taking the pole position after the qualifying session at the Formula One Bahrain International Circuit in Sakhir, Bahrain. World champion Lewis Hamilton tested positive for COVID-19 and will miss the Sakhir Grand Prix this weekend, his Mercedes-AMG Petronas F1 Team said Tuesday Dec. 1, 2020. (Hamad Mohammed, Pool via AP, File)

The vaccination booth 'B' is pictured in a vaccination center in a soccer stadium, home of German second division team Fortuna Duesseldorf, in Duesseldorf, Germany, Tuesday, Dec. 1, 2020. The German government is preparing to roll out a nationwide coronavirus vaccination program. (Federico Gambarini/dpa via AP)

People wearing face masks to protect against the spread of the coronavirus walk under the yellow leaves of ginko trees in Yokohama, Kanagawa prefecture, near Tokyo, Tuesday, Dec. 1, 2020. (AP Photo/Koji Sasahara)

People wait in line to be tested for COVID-19, Tuesday, Dec. 1, 2020, in Miami Beach, Fla. (AP Photo/Marta Lavandier

Cargo workers move a palette of cool boxes and other items into a pharma transport container during a demonstration on the handling and logistics of vaccines and medicines at the DHL cargo warehouse in Steenokkerzeel, Belgium, Tuesday, Dec. 1, 2020. European Commission President Ursula von der Leyen said Tuesday that member states have started working on their vaccination plans and on the logistics for the delivery of tens of millions of doses across the 27-nation bloc. Safely delivering COVID-19 vaccines, once approval has been made, will be the mission of the century for the global air cargo industry. (AP Photo/Virginia Mayo)

One of around 200 health professionals protest at the entrance of the Nurse Isabel Zendal Hospital as officials entered the state-of-the-art facility, built in 100 days at a cost of 100 million euros (119 dolllars), twice the original budget in Madrid, Spain, Tuesday, Dec. 1, 2020. Authorities in Madrid held a ceremony to open part of a 1,000-bed hospital for emergencies that critics say is no more than a vanity project, a building with beds not ready to receive patients and unnecessary now that contagion and hospitalizations are waning. Spain has officially logged 1.6 million infections and over 45,000 deaths confirmed for COVID-19 since the beginning of the year. Message on mask reads ' Public heath service'. (AP Photo/Paul White)

New wheelchairs sit in the empty Isabel Zendal new hospital during the official opening in Madrid, Spain, Tuesday, Dec. 1, 2020. Authorities in Madrid are holding a ceremony to open part of a 1,000-bed hospital for emergencies that critics say is no more than a vanity project, a building with beds not ready to receive patients and unnecessary now that contagion and hospitalizations are waning. Spain has officially logged 1.6 million infections and over 45,000 deaths confirmed for COVID-19 since the beginning of the year. (AP Photo/Paul White)

A desk with computer screens and new beds sit in the empty Isabel Zendal new hospital during the official opening in Madrid, Spain, Tuesday, Dec. 1, 2020. Authorities in Madrid are holding a ceremony to open part of a 1,000-bed hospital for emergencies that critics say is no more than a vanity project, a building with beds not ready to receive patients and unnecessary now that contagion and hospitalizations are waning. Spain has officially logged 1.6 million infections and over 45,000 deaths confirmed for COVID-19 since the beginning of the year. (AP Photo/Paul White)

A man entering the national library in The Hague, Netherlands, Tuesday, Dec. 1, 2020, passes a sign informing visitors to wear mandatory face masks. Wearing face masks in publicly accessible indoor venues such as libraries, museums became obligatory in the Netherlands on Dec. 1, 2020, when a new temporary law underpinning existing government coronavirus restrictions came into force. (AP Photo/Peter Dejong)

A person walks past an information sign for a vaccination center at a soccer stadium, home of German second division team Fortuna Duesseldorf, in Duesseldorf, Germany, Tuesday, Dec. 1, 2020. The German government is preparing to roll out a nationwide coronavirus vaccination program. (Federico Gambarini/dpa via AP)

Tokyo Gov. Yuriko Koike speaks during a news conference Wednesday, Nov. 25, 2020, in Tokyo. The board reads "infection control measures, Short and intensive." (Kyodo News via AP)

Tim Smith, of Boston, receives a free COVID-19 test given by Health Innovations, Tuesday, Dec. 1, 2020, in Chelsea, Mass. (AP Photo/Elise Amendola)

In celebration of Giving Tuesday a giant Salvation Army Red Kettle is seen Tuesday, Dec. 1, 2020, in New York's Times Square. The kettle is in place in various New York City locations during the holiday season. (AP Photo/Mary Altaffer)

People wearing face masks to prevent the spread of the coronavirus wait in a line to enter a shop in Liege, Belgium, Tuesday, Dec. 1, 2020. Non-essential shops in Belgium are reopening on Tuesday in the wake of encouraging figures about declining infection rates and hospital admissions because of the coronavirus. (AP Photo/Valentin Bianchi)