People are seen after receiving a dose of Sinova's CoronaVac coronavirus disease (COVID-19) vaccine, during a mass vaccination in Guadalupe, on the outskirts of Monterrey, Mexico July 22, 2021. REUTERS/Daniel Becerril

A man seated in a wheelchair holds his arm after receiving a dose of Sinovan's CoronaVac coronavirus disease (COVID-19) vaccine, during a mass vaccination in Guadalupe, on the outskirts of Monterrey, Mexico July 22, 2021. REUTERS/Daniel Becerril

A man seated in a wheelchair receives a dose of Sinovan's CoronaVac coronavirus disease (COVID-19) vaccine, during a mass vaccination in Guadalupe, on the outskirts of Monterrey, Mexico July 22, 2021. REUTERS/Daniel Becerril

A soldier prepares a dose of Sinovan's CoronaVac coronavirus disease (COVID-19) vaccine, during a mass vaccination in Guadalupe, on the outskirts of Monterrey, Mexico July 22, 2021. REUTERS/Daniel Becerril

Flocerfina Nual, 75, receives her second dose of Sinovac Biotech’s CoronaVac vaccine for the coronavirus disease (COVID-19) during the house to house vaccination of bedridden citizens in Valenzuela City, Metro Manila, Philippines, July 6, 2021. REUTERS/Lisa Marie David

A banner with a U.S. flag, the words “We Are Corona Free” and an image of the coronavirus with a red line through it, is displayed outside a motel during the COVID-19 pandemic in Saugus, Massachusetts, U.S., July 1, 2021. REUTERS/Brian Snyder

A banner with a U.S. flag, the words “We Are Corona Free” and an image of the coronavirus with a red line through it, is displayed outside a motel during the COVID-19 pandemic in Saugus, Massachusetts, U.S., July 1, 2021. REUTERS/Brian Snyder

A banner with a U.S. flag, the words “We Are Corona Free” and an image of the coronavirus with a red line through it, is displayed outside a motel during the COVID-19 pandemic in Saugus, Massachusetts, U.S., July 1, 2021. REUTERS/Brian Snyder

A woman receives a dose of a coronavirus disease (COVID-19) vaccine at a temporary vaccination unit set up at a former TikTok studio in the MEGA Park mall in Almaty, Kazakhstan June 23, 2021. The country is using domestically-developed QazCovid-in vaccine, also known as QazVac, Russian Sputnik V (Gam-COVID-Vac) vaccine and Chinese-developed CoronaVac and Hayat-Vax vaccines against the coronavirus disease (COVID-19). REUTERS/Pavel Mikheyev

A medical worker holds a vial with the Chinese-developed CoronaVac vaccine against the coronavirus disease (COVID-19) at a temporary vaccination unit set up at a former TikTok studio in the MEGA Park mall in Almaty, Kazakhstan June 23, 2021. REUTERS/Pavel Mikheyev

A woman receives a dose of a coronavirus disease (COVID-19) vaccine at a temporary vaccination unit set up at a former TikTok studio in the MEGA Park mall in Almaty, Kazakhstan June 23, 2021. The country is using domestically-developed QazCovid-in vaccine, also known as QazVac, Russian Sputnik V (Gam-COVID-Vac) vaccine and Chinese-developed CoronaVac and Hayat-Vax vaccines against the coronavirus disease (COVID-19). REUTERS/Pavel Mikheyev

A medical worker holds a vial with the Chinese-developed CoronaVac vaccine against the coronavirus disease (COVID-19) at a temporary vaccination unit set up at a former TikTok studio in the MEGA Park mall in Almaty, Kazakhstan June 23, 2021. REUTERS/Pavel Mikheyev

A woman receives a dose of a coronavirus disease (COVID-19) vaccine at a temporary vaccination unit set up at a former TikTok studio in the MEGA Park mall in Almaty, Kazakhstan June 23, 2021. The country is using domestically-developed QazCovid-in vaccine, also known as QazVac, Russian Sputnik V (Gam-COVID-Vac) vaccine and Chinese-developed CoronaVac and Hayat-Vax vaccines against the coronavirus disease (COVID-19). REUTERS/Pavel Mikheyev TPX IMAGES OF THE DAY

A medical worker holds a vial with the Chinese-developed CoronaVac vaccine against the coronavirus disease (COVID-19) at a temporary vaccination unit set up at a former TikTok studio in the MEGA Park mall in Almaty, Kazakhstan June 23, 2021. REUTERS/Pavel Mikheyev

A healthcare worker sends a man to an observation area as he received a dose of the Sinovac's CoronaVac coronavirus disease (COVID-19) vaccine in a vaccination center in San Salvador, El Salvador, June 22, 2021. REUTERS/Jose Cabezas

A healthcare worker prepares a dose of the Sinovac's CoronaVac coronavirus disease (COVID-19) vaccine in a vaccination center in San Salvador, El Salvador, June 22, 2021. REUTERS/Jose Cabezas

Residents undergo counseling before receiving their first dose of Sinovac Biotech's CoronaVac vaccine for the coronavirus disease (COVID-19), at the Barangay Sucat Covered Court, in Muntinlupa City, Metro Manila, Philippines, June 21, 2021. REUTERS/Lisa Marie David

A woman who has received her first dose of Sinovac Biotech's CoronaVac vaccine for the coronavirus disease (COVID-19) drops her entry for the weekly raffle draw of sacks of rice for vaccinated residents, at the Barangay Sucat Covered Court, in Muntinlupa City, Metro Manila, Philippines, June 21, 2021. REUTERS/Lisa Marie David

A woman who has received her first dose of Sinovac Biotech's CoronaVac vaccine for the coronavirus disease (COVID-19) drops her entry for the weekly raffle draw of sacks of rice for vaccinated residents, at the Barangay Sucat Covered Court, in Muntinlupa City, Metro Manila, Philippines, June 21, 2021. REUTERS/Lisa Marie David

Health workers prepare to inoculate residents with Sinovac Biotech's CoronaVac vaccine for the coronavirus disease (COVID-19), at the Barangay Sucat Covered Court, in Muntinlupa City, Metro Manila, Philippines, June 21, 2021. REUTERS/Lisa Marie David

A woman receives her first dose of Sinovac Biotech's CoronaVac vaccine for the coronavirus disease (COVID-19), at the Barangay Sucat Covered Court, in Muntinlupa City, Metro Manila, Philippines, June 21, 2021. REUTERS/Lisa Marie David

People wait outside a mobile vaccination centre to receive a dose of Sinovac's CoronaVac vaccine against the coronavirus disease (COVID-19), in Santiago, Chile June 16, 2021. REUTERS/Ivan Alvarado

A man waits outside a mobile vaccination centre to receive a dose of Sinovac's CoronaVac vaccine against the coronavirus disease (COVID-19), in Santiago, Chile June 16, 2021. REUTERS/Ivan Alvarado

People wait outside a mobile vaccination centre to receive a dose of Sinovac's CoronaVac vaccine against the coronavirus disease (COVID-19) in Santiago, Chile June 16, 2021. REUTERS/Ivan Alvarado

People wait outside a mobile vaccination centre to receive a dose of Sinovac's CoronaVac vaccine against the coronavirus disease (COVID-19) in Santiago, Chile June 16, 2021. REUTERS/Ivan Alvarado

A man shows a vaccination record card reading 'I get vaccinated' outside a mobile vaccination centre before receiving a dose of Sinovac's CoronaVac vaccine against the coronavirus disease (COVID-19) in Santiago, Chile June 16, 2021. REUTERS/Ivan Alvarado

A man waits outside a mobile vaccination centre to receive a dose of Sinovac's CoronaVac vaccine against the coronavirus disease (COVID-19), in Santiago, Chile June 16, 2021. REUTERS/Ivan Alvarado

A police officer receives his first dose of Sinovac Biotech’s CoronaVac vaccine for the coronavirus disease (COVID-19) during the vaccination of essential workers, at the Navotas Fish Port, in Navotas City, Metro Manila, Philippines, June 10, 2021. REUTERS/Lisa Marie David

Violeta Sericon, a sardines factory worker for 24 years, receives her first dose of Sinovac Biotech’s CoronaVac vaccine for the coronavirus disease (COVID-19) during the vaccination of essential workers, at the Navotas Fish Port, in Navotas City, Metro Manila, Philippines, June 10, 2021. REUTERS/Lisa Marie David

Cherry Toregue, a sardines factory worker, receives her first dose of Sinovac Biotech’s CoronaVac vaccine for the coronavirus disease (COVID-19) during the vaccination of essential workers, at the Navotas Fish Port, in Navotas City, Metro Manila, Philippines, June 10, 2021. REUTERS/Lisa Marie David

The picture of a man is posted at a makeshift memorial, where according to local media the 29-year-old man was fatally shot Wednesday afternoon, on a sidewalk in the Corona section of the Queens borough of New York City, U.S., June 3, 2021. REUTERS/Shannon Stapleton

A woman reacts as she is vaccinated with Sinovac Biotech's CoronaVac vaccine against the coronavirus disease (COVID-19) in a cinema turned into a vaccination site in San Juan City, Metro Manila, Philippines, June 2, 2021. REUTERS/Eloisa Lopez

A healthcare worker inoculates a woman with Sinovac Biotech's CoronaVac vaccine against the coronavirus disease (COVID-19) in a cinema turned into a vaccination site in San Juan City, Metro Manila, Philippines, June 2, 2021. REUTERS/Eloisa Lopez

A man gets a dose of Sinovac Biotech's CoronaVac vaccine against the coronavirus disease (COVID-19) in a cinema turned into a vaccination site in San Juan City, Metro Manila, Philippines, June 2, 2021. REUTERS/Eloisa Lopez

A woman sits in an almost empty cinema to be monitored after getting a dose of Sinovac Biotech's CoronaVac vaccine against the coronavirus disease (COVID-19) in a cinema turned into a vaccination site in San Juan City, Metro Manila, Philippines, June 2, 2021. REUTERS/Eloisa Lopez

Soccer Football - Liga MX - Final - Cruz Azul v Santos - Estadio Azteca, Mexico City, Mexico - May 30, 2021 Cruz Azul's Jose Corona and Julio Dominguez celebrate with the trophy after winning the Liga MX REUTERS/Henry Romero

Soccer Football - Liga MX - Final - Cruz Azul v Santos - Estadio Azteca, Mexico City, Mexico - May 30, 2021 Cruz Azul's Jose Corona celebrates with the trophy after winning the Liga MX REUTERS/Henry Romero

Soccer Football - Liga MX - Final - Cruz Azul v Santos - Estadio Azteca, Mexico City, Mexico - May 30, 2021 Cruz Azul's Jose Corona celebrates with the trophy after winning the Liga MX REUTERS/Henry Romero

Soccer Football - Liga MX - Final - Cruz Azul v Santos - Estadio Azteca, Mexico City, Mexico - May 30, 2021 Cruz Azul's Jose Corona and Julio Dominguez celebrate with the trophy after winning the Liga MX REUTERS/Henry Romero

Soccer Football - Liga MX - Final - Cruz Azul v Santos - Estadio Azteca, Mexico City, Mexico - May 30, 2021 Cruz Azul's Jose Corona and Julio Dominguez celebrate with the trophy after winning the Liga MX REUTERS/Henry Romero

Soccer Football - Liga MX - Final - Cruz Azul v Santos - Estadio Azteca, Mexico City, Mexico - May 30, 2021 Cruz Azul's Jose Corona and Julio Dominguez celebrate with the trophy after winning the Liga MX REUTERS/Henry Romero

Soccer Football - Liga MX - Final - Cruz Azul v Santos - Estadio Azteca, Mexico City, Mexico - May 30, 2021 Cruz Azul's Jose Corona and Julio Dominguez celebrate with the trophy after winning the Liga MX REUTERS/Henry Romero

Soccer Football - Liga MX - Final - Cruz Azul v Santos - Estadio Azteca, Mexico City, Mexico - May 30, 2021 Cruz Azul's Jose Corona celebrates with the trophy after winning the Liga MX REUTERS/Henry Romero

Soccer Football - Liga MX - Final - Cruz Azul v Santos - Estadio Azteca, Mexico City, Mexico - May 30, 2021 Cruz Azul's Jose Corona celebrates with the trophy after winning the Liga MX REUTERS/Henry Romero

Soccer Football - Liga MX - Final - Cruz Azul v Santos - Estadio Azteca, Mexico City, Mexico - May 30, 2021 Cruz Azul's Jose Corona celebrates with the trophy after winning the Liga MX REUTERS/Henry Romero

Soccer Football - Liga MX - Final - Cruz Azul v Santos - Estadio Azteca, Mexico City, Mexico - May 30, 2021 Cruz Azul's Jose Corona celebrates with the trophy after winning the Liga MX REUTERS/Henry Romero

Soccer Football - Liga MX - Final - Cruz Azul v Santos - Estadio Azteca, Mexico City, Mexico - May 30, 2021 Cruz Azul's Jose Corona celebrates with the trophy after winning the Liga MX REUTERS/Henry Romero

A health worker prepares a syringe with Sinovac Biotech’s CoronaVac vaccine against the coronavirus disease (COVID-19) during a house to house vaccination, in Manila, Philippines, May 26, 2021. REUTERS/Lisa Marie David

Consolacion Roman, 88, receives her first dose of Sinovac Biotech’s CoronaVac vaccine against the coronavirus disease (COVID-19) during a house to house vaccination, in Manila, Philippines, May 26, 2021. REUTERS/Lisa Marie David

A health worker prepares a dose of Sinovac's CoronaVac coronavirus disease (COVID-19) vaccine, during a mass vaccination program in Apodaca, on the outskirts of Monterrey, Mexico May 25, 2021. REUTERS/Daniel Becerril

A health worker prepares a dose of Sinovac's CoronaVac coronavirus disease (COVID-19) vaccine, during a mass vaccination program in Apodaca, on the outskirts of Monterrey, Mexico May 25, 2021. REUTERS/Daniel Becerril

A pregnant woman receives a dose of Sinovac's CoronaVac coronavirus disease (COVID-19) vaccine during a mass vaccination program in Apodaca, on the outskirts of Monterrey, Mexico May 25, 2021. REUTERS/Daniel Becerril

A pregnant woman receives a dose of Sinovac's CoronaVac coronavirus disease (COVID-19) vaccine during a mass vaccination program in Apodaca, on the outskirts of Monterrey, Mexico May 25, 2021. REUTERS/Daniel Becerril

A pregnant woman receives a dose of Sinovac's CoronaVac coronavirus disease (COVID-19) vaccine during a mass vaccination program in Apodaca, on the outskirts of Monterrey, Mexico May 25, 2021. REUTERS/Daniel Becerril

A pregnant woman receives a dose of Sinovac's CoronaVac coronavirus disease (COVID-19) vaccine during a mass vaccination program in Apodaca, on the outskirts of Monterrey, Mexico May 25, 2021. REUTERS/Daniel Becerril

A man receives a dose of Sinovac's CoronaVac coronavirus disease (COVID-19) vaccine at a vaccination centre as the sanitary authority starts a vaccination campaign for under 30-year-old people in Santiago, Chile May 25, 2021. REUTERS/Ivan Alvarado

A health care worker is reflected as she prepares a dose of Sinovac's CoronaVac coronavirus disease (COVID-19) vaccine at a vaccination centre as the sanitary authority starts a vaccination campaign for under 30-year-old people in Santiago, Chile May 25, 2021. REUTERS/Ivan Alvarado

A health care worker prepares to administer a dose of Sinovac's CoronaVac coronavirus disease (COVID-19) vaccine at a vaccination centre as the sanitary authority starts a vaccination campaign for under 30-year-old people in Santiago, Chile May 25, 2021. REUTERS/Ivan Alvarado

A woman receives a dose of Sinovac's CoronaVac coronavirus disease (COVID-19) vaccine at a vaccination centre as the sanitary authority starts a vaccination campaign for under 30-year-old people in Santiago, Chile May 25, 2021. REUTERS/Ivan Alvarado

A health care worker prepares a dose of Sinovac's CoronaVac coronavirus disease (COVID-19) vaccine at a vaccination centre as the sanitary authority starts a vaccination campaign for under 30-year-old people in Santiago, Chile May 25, 2021. REUTERS/Ivan Alvarado