A medical staff receives her second dose of COVID-19 vaccine at a government Hospital in Hyderabad, India, Monday, Feb. 15, 2021. (AP Photo/Mahesh Kumar A.)

FILE - In this Dec. 22, 2020 file photo, Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, prepares to receive his first dose of the COVID-19 vaccine at the National Institutes of Health in Bethesda, Md. Fauci won a $1 million award from the Israeli Dan David Foundation for “courageously defending science” during the coronavirus pandemic. On Monday, Feb. 15, 2021, the foundation named Fauci, President Joe Biden's chief medical advisor, as the winner of one of three prizes, saying he had earned it over a lifetime of leadership on HIV research and AIDS relief, as well as his advocacy for the vaccines against COVID-19. (AP Photo/Patrick Semansky, Pool, File)

A woman wearing a face mask to prevent the spread of the coronavirus walks as traffic snarls in Quezon City, Philippines on Monday, Feb. 15, 2021. The Philippine government's approval for reopening many movie theaters, video game arcades and other leisure businesses closed since last year was postponed at least another two weeks after mayors feared it will bring new coronavirus infections. (AP Photo/Aaron Favila)

Elderly people wait to get the AstraZeneca vaccine against COVID-19 in the Magdalena Contreras area of Mexico City, Monday, Feb. 15, 2021, as Mexico begins to vaccinate people over age 60 against the new coronavirus. (AP Photo/Marco Ugarte)

A political carnival float depicting former US president Donald Trump is pulled through the streets in Duesseldorf, Germany, Monday, Feb. 15, 2021. Because of the coronavirus pandemic the traditional; carnival parades are canceled but eight floats are pulled through the empty streets in Duesseldorf, where normally hundreds of thousands of people would celebrate the street carnival. (AP Photo/Martin Meissner)

A federal police officer directs a truck driver coming from Austria into the border checkpoint on the A93 motorway near Kiefersfelden, Germany, Monday, Feb. 12, 2021. The tightened German entry rules at the border with the Austrian state of Tyrol to protect against the spread of the coronavirus came into force on Sunday night. Photo: Matthias Balk/dpa via AP)

New Zealand's Prime Minister Jacinda Ardern talks to media in Wellington, New Zealand Monday, Feb. 15, 2021. As people in Auckland adjusted to a new lockdown on Monday, health officials said they'd found no evidence the coronavirus had spread further in the community, raising hopes the restrictions might be short-lived. (AP Photo/Nick Perry)

A reveller stands in front of a political carnival float depicting Russia's President Vladimir Putin fighting with opposition leader Alexei Navalny in the streets of Duesseldorf, Germany, Monday, Feb. 15, 2021. Because of the coronavirus pandemic the traditional 'Rosenmontag' carnival parade are canceled but eight floats are pulled through the empty streets in Duesseldorf, where normally hundreds of thousands of people would celebrate the street carnival. (AP Photo/Martin Meissner)

An healthcare worker receives a Pfizer-BioNTech COVID-19 vaccine during a nationwide vaccination program at the American University Medical Center in Beirut, Lebanon, Sunday, Feb. 14, 2021. Lebanon administered Sunday its first jabs of the COVID-19 vaccine, with an intensive care unit physician and a well-known 93-year-old comedian becoming among the first to receive the Pfizer-BioNTech doses. (AP Photo/Bilal Hussein)

Trucks stuck in traffic as they heading towards Germany near the border checkpoint between Austria and Germany in Kiefersfelden, Monday, Feb. 12, 2021. The tightened German entry rules at the border with the Austrian state of Tyrol to protect against the spread of the coronavirus came into force on Sunday night. Photo: Matthias Balk/dpa via AP)

Some carnival fools of the Schwarze Veri Zunft Ravensburg walk through the Obertor gate in Ravensburg, Germany, Monday, Feb. 15, 2021. The police broke up the gathering immediately afterwards. (Felix Kaestle/dpa via AP)

Kashmiri students wearing face masks arrive as colleges reopened eleven months after being closed due to the coronavirus pandemic in Srinagar, Indian controlled Kashmir, Monday, Feb. 15, 2021. (AP Photo/Mukhtar Khan)

An official from the Chinese Embassy in Zimbabwe holds a Chinese flag next to a plane carrying Sinopharm COVID-19 vaccine from China upon arrival at Robert Mugabe International airport in Harare, Monday, Feb, 15, 2021. Zimbabwe has received its first COVID-19 vaccines with the arrival early Monday of an Air Zimbabwe jet carrying 200,000 Sinopharm doses from China. (AP Photo/Tsvangirayi Mukwazhi)

An elderly couple wait at the vaccination mega center in Athens, Monday, Feb. 15, 2021. The Promitheas center, which has started operating Monday, will host 96 vaccination points and when fully developed, an estimated of 150,000 vaccinations per month could be conducted. (AP Photo/Thanassis Stavrakis)

A woman gets her temperature taken as she waits to get the AstraZeneca vaccine against COVID-19 in the Magdalena Contreras area of Mexico City, Monday, Feb. 15, 2021, as Mexico begins to vaccinate people over age 60 against the new coronavirus. (AP Photo/Marco Ugarte)

Roger Convales from Brazil waves to the media as he speaks on the phone to a journalist from his room at the Radisson Blu Edwardian Hotel, near Heathrow Airport, London, Monday Feb. 15, 2021 where he will remain during a 10 day quarantine period after arriving in England from one of 33 "red list" countries. New regulations now in force require anyone who has been in a 'high-risk' location to enter England through a designated port and have pre-booked a package to stay at one of the Government's managed quarantine facilities. (AP Photo/Alastair Grant)

Cars coming from Austria stuck in traffic at a border checkpoint on the A93 motorway near Kiefersfelden, Germany, Monday, Feb. 15, 2021. The tightened German entry rules at the border with the Austrian state of Tyrol to protect against the spread of the coronavirus came into force on Sunday night. (Matthias Balk/dpa via AP)

People wearing face masks to protect against the spread of the coronavirus wait for signals to turn to green at a crossing in Tokyo, Monday, Feb. 15, 2021. Tokyo is under state of emergency as the government seeks to stop a surge of new coronavirus infections. (AP Photo/Koji Sasahara)

Two fools with surgical masks over their faces celebrate on Shrove Monday in the city center of Rottweil, Germany, Monday, Feb. 15, 2021. Due to the coronavirus pandemic, the fool's jump, a traditional part of the city's carnival celebrations, was officially cancelled, but some fools were still on the move. The Rottweiler 'Narrensprung' is one of the highlights of the Swabian-Alemannic carnival in the southwest German region. (Sebastian Gollnow/dpa via AP)

A coach delivers passengers to the Radisson Blu Edwardian Hotel, near Heathrow Airport, London, Monday Feb. 15, 2021 where they will remain during a 10 day quarantine period after returning to England from one of 33 "red list" countries. New regulations now in force require anyone who has been in a 'high-risk' location to enter England through a designated port and have pre-booked a package to stay at one of the Government's managed quarantine facilities. (Steve Parsons/PA via AP)

An air force medical staff prepares a dose of Moderna COVID-19 vaccine at the vaccination mega center in Athens, Monday, Feb. 15, 2021. The Promitheas center, which has started operating Monday, will host 96 vaccination points and when fully developed, an estimated of 150,000 vaccinations per month could be conducted. (AP Photo/Thanassis Stavrakis)

A medical staff receives her second dose of COVID-19 vaccine at a government Hospital in Hyderabad, India, Monday, Feb. 15, 2021. (AP Photo/Mahesh Kumar A.)

Two men from the Haredi Orthodox Jewish community arrive at an event to encourage vaccine uptake in Britain's Haredi community at the John Scott Vaccination Centre in London, Saturday, Feb. 13, 2021. The event aims to breakdown some of the misconceptions about vaccines, as well as myths and negative publicity surrounding the Haredi community which has been hard hit during the COVID-19 pandemic. (AP Photo/Frank Augstein)

Kashmiri students assemble inside their campus as colleges reopened eleven months after being closed due to the coronavirus pandemic in Srinagar, Indian controlled Kashmir, Monday, Feb. 15, 2021. (AP Photo/Mukhtar Khan)

FILE - In this file photo dated Saturday, Feb. 6, 2021, a nurse prepares a dose of the AstraZeneca COVID-19 vaccine at the Edouard Herriot hospital, in Lyon, central France. The World Health Organization (WHO) on Monday Feb. 15, 2021, granted an emergency authorization for the AstraZeneca, a move that should allow its partners to ship millions of doses to countries worldwide as part of a U.N.-backed program to stop the pandemic. (Olivier Chassignole, Pool FILE via AP)

A street vendor wears a mask with a sticker which reads "Fortune" at a street stall near Wangfujing on the fourth day of the Lunar Chinese New Year in Beijing on Monday, Feb. 15, 2021. (AP Photo/Ng Han Guan)

A woman gets an Astra Zeneca COVID-19 vaccine at a center set up inside the Metropolitan Circus building in Bucharest, Romania, Monday, Feb. 15, 2021. Romania started vaccinating people aged between 18 and 55 with the Astra Zeneca vaccine on Monday, with some 145 thousand recipients booked for the vaccine in the first four days of registration. (AP Photo/Vadim Ghirda)

Britain's Prime Minister Boris Johnson, wearing a face mask to prevent the spread of the coronavirus, visits a PPE manufacturing facility during a visit to the north east of England, in Seaton Delaval, England, Saturday, Feb. 13, 2021. (AP Photo/Scott Heppell, Pool)

This Feb. 4, 2021 photo shows preparations being made prior to the opening of a high-volume mass vaccination hub at the Moscone Center, in San Francisco, Calif. San Francisco is the latest California city to temporarily shutter a mass vaccination site due to lack of vaccine, joining Los Angeles in pausing inoculations amid a national shortage. (Anda Chu/Bay Area News Group via AP)

A carnival float designed by the environment organization Greenpeace and depicting North Rhine-Westphalia state governor Armin Laschet in a lignite mining dredger, stands in front of Cologne Cathedral in protest against his climate policy in Cologne, Germany, Monday, Feb. 15, 2021. The slogan on the hat reads : 'Despite Corona, Laschet is as mad as ever'. (Rolf Vennenbernd/dpa via AP)

FILE - In this Thursday, Jan. 7, 2021 file photo, an Israeli military paramedic prepares a Pfizer COVID-19 vaccine, to be administered to elderly people at a medical center in Ashdod, southern Israel. After racing to a quick start, Israel is blaming online misinformation for a sudden slowdown in its campaign to vaccinate its adult population. Israel's Health Ministry, which is spearheading the vaccination efforts, is employing both carrots and sticks as it tries to persuade reluctant holdouts to get immunized. (AP Photo/Tsafrir Abayov, File)

People over age 60 wait in an hours-long line to get the AstraZeneca vaccine, on the day Mexico begins vaccinating its elderly population against COVID-19, outside a health center in the outlying Milpa Alta borough of Mexico City, Monday, Feb. 15, 2021. (AP Photo/Rebecca Blackwell)

The access to the chair lift area in Bardonecchia, northern Italy, is deserted, Monday, Feb. 15, 2021, after the Italian government on Sunday abruptly delayed opening Italy's beloved ski season because a coronavirus variant was detected in a good portion of recently infected persons in the country. (Marco Alpozzi/LaPresse via AP)

A teacher gives anti-bacterial gel to a preschool student on the first day back to in-person class amid the COVID-19 pandemic in Bogota, Colombia, Monday, Feb. 15, 2021. Bogota is returning students to blended classes at public schools after a year of online education due to the pandemic. (AP Photo/Fernando Vergara)

Young children wearing masks to protect from the coronavirus pose for photos with giant replica of candy haw, a popular Beijing snack, at a street stall near Wangfujing on the fourth day of the Lunar Chinese New Year in Beijing on Monday, Feb. 15, 2021. (AP Photo/Ng Han Guan)