Eswar Jani, 31, a sanitation worker, receives COVISHIELD, a COVID-19 vaccine manufactured by Serum Institute of India, during the world's largest COVID-19 vaccination campaigns at Mathalput Community Health Centre in the remote Koraput district of the eastern state of Odisha, India, January 16, 2021. REUTERS/Danish Siddiqui

A healthcare worker holding a rose receives an AstraZeneca's COVISHIELD vaccine, during the coronavirus disease (COVID-19) vaccination campaign, at a medical centre in Mumbai, India, January 16, 2021. REUTERS/Francis Mascarenhas

Healthcare workers perform prayers before the start of the world's largest COVID-19 vaccination campaigns at Mathalput Community Health Centre in the remote Koraput district of the eastern state of Odisha, India, January 16, 2021. REUTERS/Danish Siddiqui

Healthcare workers wait to receive vaccine during one of the world's largest COVID-19 vaccination campaigns at Mathalput Community Health Centre in the remote Koraput district of the eastern state of Odisha, India, January 16, 2021. REUTERS/Danish Siddiqui

Healthcare workers wait to receive vaccine during one of the world's largest COVID-19 vaccination campaigns at Mathalput Community Health Centre in the remote Koraput district of the eastern state of Odisha, India, January 16, 2021. REUTERS/Danish Siddiqui

Healthcare workers watch Indian Prime Minister Narendra Modi addressing them through video conferencing to launch one of the world's largest COVID-19 vaccination campaigns at Mathalput Community Health Centre in the remote Koraput district of the eastern state of Odisha, India, January 16, 2021. REUTERS/Danish Siddiqui

Mourners react during the funeral of Isti Yudha Prastika, a flight attendant of NAM Air who was on board with Sriwijaya Air flight SJ 182 which crashed into Java sea, in Depok, on the outskirts of Jakarta, Indonesia January 16, 2021. REUTERS/Willy Kurniawan

Healthcare workers stand in a line as they wait to receive the COVID-19 vaccine during the coronavirus disease (COVID-19) vaccination campaign, at a medical centre in Mumbai, India, January 16, 2021. REUTERS/Francis Mascarenhas

A healthcare worker fills a syringe with a dose of Bharat Biotech's COVID-19 vaccine called COVAXIN, during the coronavirus disease (COVID-19) vaccination campaign at All India Institute of Medical Sciences (AIIMS) hospital in New Delhi, India, January 16, 2021. REUTERS/Adnan Abidi

A healthcare worker receives a Bharat Biotech's COVID-19 vaccine called COVAXIN, during the coronavirus disease (COVID-19) vaccination campaign at All India Institute of Medical Sciences (AIIMS) hospital in New Delhi, India, January 16, 2021. REUTERS/Adnan Abidi

A healthcare worker reacts as he receives an AstraZeneca's COVISHIELD vaccine, during the coronavirus disease (COVID-19) vaccination campaign, at a medical centre in Mumbai, India, January 16, 2021. REUTERS/Francis Mascarenhas

A nurse displays a vial of AstraZeneca's COVISHIELD vaccine, during the coronavirus disease (COVID-19) vaccination campaign, at a medical centre in Mumbai, India, January 16, 2021. REUTERS/Francis Mascarenhas

A healthcare worker receives a Bharat Biotech's COVID-19 vaccine called COVAXIN, during the coronavirus disease (COVID-19) vaccination campaign at All India Institute of Medical Sciences (AIIMS) hospital in New Delhi, India, January 16, 2021. REUTERS/Adnan Abidi

A healthcare worker receives an AstraZeneca's COVISHIELD vaccine, during the coronavirus disease (COVID-19) vaccination campaign, at a medical centre in Mumbai, India, January 16, 2021. REUTERS/Francis Mascarenhas

Indian Health Minister Harsh Vardhan holds a dose of Bharat Biotech's COVID-19 vaccine called COVAXIN, during a vaccination campaign at All India Institute of Medical Sciences (AIIMS) hospital in New Delhi, India, January 16, 2021. REUTERS/Adnan Abidi

A healthcare worker receives a Bharat Biotech's COVID-19 vaccine called COVAXIN, during the coronavirus disease (COVID-19) vaccination campaign at All India Institute of Medical Sciences (AIIMS) hospital in New Delhi, India, January 16, 2021. REUTERS/Adnan Abidi

Police detain a Buddhist monk while he takes part in a protest in support of the jailed nationalist right wing monk Wirathu outside Insein prison in Yangon, Myanmar, January 16, 2021. REUTERS/Shwe Paw Mya Tin

A healthcare worker receives a Bharat Biotech's COVID-19 vaccine called COVAXIN, during the coronavirus disease (COVID-19) vaccination campaign at All India Institute of Medical Sciences (AIIMS) hospital in New Delhi, India, January 16, 2021. REUTERS/Adnan Abidi

A paramedic fills a syringe with COVISHIELD, a COVID-19 vaccine manufactured by Serum Institute of India, before administering it to a colleague during one of the world's largest COVID-19 vaccination campaigns at a health centre in Ahmedabad, India, January 16, 2021. REUTERS/Amit Dave

Indian Health Minister Harsh Vardhan holds a dose of Bharat Biotech's COVID-19 vaccine called COVAXIN, during a vaccination campaign at All India Institute of Medical Sciences (AIIMS) hospital in New Delhi, India, January 16, 2021. REUTERS/Adnan Abidi

Police detain a nationalist supporter while he takes part in a protest in support of the jailed nationalist right wing monk Wirathu outside Insein prison in Yangon, Myanmar, January 16, 2021. REUTERS/Shwe Paw Mya Tin

Police clash with Buddhist monks while they take part in a protest in support of the jailed nationalist right wing monk Wirathu outside Insein prison in Yangon, Myanmar, January 16, 2021. REUTERS/Shwe Paw Mya Tin

Police detain a Buddhist monk while he takes part in a protest in support of the jailed nationalist right wing monk Wirathu outside Insein prison in Yangon, Myanmar, January 16, 2021. REUTERS/Shwe Paw Mya Tin

A vendor wearing a face mask and a face shield as protection against the coronavirus disease (COVID-19) repacks cooking oil at a market, in Manila, Philippines, January 16, 2021. REUTERS/Lisa Marie David

A fish vendor tends to her products at her stall at a market, in Manila, Philippines, January 16, 2021. REUTERS/Lisa Marie David

Police officers wearing face masks and face shields as protection against the coronavirus disease (COVID-19) carry wooden baton as they enforce safety protocols at a market, in Manila, Philippines, January 16, 2021. REUTERS/Lisa Marie David

Hondurans taking part in a new caravan of migrants, set to head to the United States, cross the El Florido border crossing point into Guatemala, in El Florido, Guatemala January 15, 2021. REUTERS/Luis Echeverria

Healthcare workers and hospital staff stand in a room set up for COVID-19 vaccinations at the Max hospital amid the outbreak of the coronavirus disease (COVID-19) in New Delhi, India January 16, 2021. REUTERS/Anushree Fadnavis

Healthcare workers and hospital stand at the entrance of a COVID-19 vaccination centre, at the Max hospital amid the outbreak of the coronavirus disease (COVID-19) in New Delhi, India January 16, 2021. REUTERS/Anushree Fadnavis

People wearing face masks as protection against the coronavirus disease (COVID-19) shop at a market, in Manila, Philippines, January 16, 2021. REUTERS/Lisa Marie David

People wearing face masks as protection against the coronavirus disease (COVID-19) shop at a market, in Manila, Philippines, January 16, 2021. REUTERS/Lisa Marie David

Hondurans taking part in a new caravan of migrants, set to head to the United States, cross the El Florido border crossing point into Guatemala, in El Florido, Guatemala January 15, 2021. REUTERS/Luis Echeverria

A woman carrying her baby takes part in a new caravan of migrants, set to head to the United States, as they cross the El Florido border crossing point into Guatemala, in El Florido, Guatemala January 15, 2021. REUTERS/Luis Echeverria

Hondurans taking part in a new caravan of migrants, set to head to the United States, cross the El Florido border crossing point into Guatemala, in El Florido, Guatemala January 15, 2021. REUTERS/Luis Echeverria

Hondurans taking part in a new caravan of migrants, set to head to the United States, cross the El Florido border crossing point into Guatemala, in El Florido, Guatemala January 15, 2021. REUTERS/Luis Echeverria

Hondurans taking part in a new caravan of migrants, set to head to the United States, cross the El Florido border crossing point into Guatemala, in El Florido, Guatemala January 15, 2021. REUTERS/Luis Echeverria

Hondurans taking part in a new caravan of migrants, set to head to the United States, cross the El Florido border crossing point into Guatemala, in El Florido, Guatemala January 15, 2021. REUTERS/Luis Echeverria

A woman stands outside a COVID-19 vaccination centre at the Max hospital amid the outbreak of the coronavirus disease (COVID-19) in New Delhi, India January 16, 2021. REUTERS/Anushree Fadnavis

Healthcare workers watch Indian Prime Minister Narendra Modi addressing them through video conferencing to launch one of the world's largest COVID-19 vaccination campaigns at a government-run hospital in Kolkata, India, January 16, 2021. REUTERS/Rupak De Chowdhuri

Healthcare workers watch Indian Prime Minister Narendra Modi addressing them through video conferencing to launch one of the world's largest COVID-19 vaccination campaigns at a government-run hospital in Kolkata, India, January 16, 2021. REUTERS/Rupak De Chowdhuri

A worker prepares for a disinfection operation, during a lockdown due to the coronavirus disease (COVID-19) outbreak, in Kuala Lumpur, Malaysia January 16, 2021. REUTERS/Lim Huey Teng

A firefighter wearing a protective mask has his body temperature checked before a disinfection operation, during a lockdown due to the coronavirus disease (COVID-19) outbreak, in Kuala Lumpur, Malaysia January 16, 2021. REUTERS/Lim Huey Teng

Firefighters wearing protective masks gather before a disinfection operation, during a lockdown due to the coronavirus disease (COVID-19) outbreak, in Kuala Lumpur, Malaysia January 16, 2021. REUTERS/Lim Huey Teng

A firefighter sprays disinfectant at a business area, during a lockdown due to the coronavirus disease (COVID-19) outbreak, in Kuala Lumpur, Malaysia January 16, 2021. REUTERS/Lim Huey Teng

Firefighters wearing protective masks gather before a disinfection operation, during a lockdown due to the coronavirus disease (COVID-19) outbreak, in Kuala Lumpur, Malaysia January 16, 2021. REUTERS/Lim Huey Teng

Firefighters wearing protective masks gather before a disinfection operation, during a lockdown due to the coronavirus disease (COVID-19) outbreak, in Kuala Lumpur, Malaysia January 16, 2021. REUTERS/Lim Huey Teng

A firefighter sprays disinfectant at a business area, during a lockdown due to the coronavirus disease (COVID-19) outbreak, in Kuala Lumpur, Malaysia January 16, 2021. REUTERS/Lim Huey Teng

The new section of the bollard-type border wall erected in Sunland Park, New Mexico, U.S., as seen from the Mexican side of the border in Ciudad Juarez, Mexico January 15, 2021. REUTERS/Jose Luis Gonzalez

A member of a construction crew works on a new section of the bollard-type border wall in Sunland Park, New Mexico, U.S., as seen from the Mexican side of the border in Ciudad Juarez, Mexico January 15, 2021. REUTERS/Jose Luis Gonzalez

A member of a construction crew using heavy machinery works on a new section of the bollard-type border wall in Sunland Park, New Mexico, U.S., as seen from the Mexican side of the border in Ciudad Juarez, Mexico January 15, 2021. REUTERS/Jose Luis Gonzalez

Members of a construction crew using heavy machinery work on a new section of the bollard-type border wall in Sunland Park, New Mexico, U.S., as seen from the Mexican side of the border in Ciudad Juarez, Mexico January 15, 2021. REUTERS/Jose Luis Gonzalez

A member of a construction crew works on a new section of the bollard-type border wall in Sunland Park, New Mexico, U.S., as seen from the Mexican side of the border in Ciudad Juarez, Mexico January 15, 2021. REUTERS/Jose Luis Gonzalez

A general view shows a new section of the bollard-type border wall erected in Sunland Park, New Mexico, U.S., as seen from the Mexican side of the border in Ciudad Juarez, Mexico January 15, 2021. REUTERS/Jose Luis Gonzalez

Members of a construction crew work on a new section of the bollard-type border wall in Sunland Park, New Mexico, U.S., as seen from the Mexican side of the border in Ciudad Juarez, Mexico January 15, 2021. REUTERS/Jose Luis Gonzalez

People drive through the Jurassic Quest Experience outside The Rose Bowl Stadium during the outbreak of the coronavirus disease (COVID-19), in Pasadena, California, U.S., January 15, 2021. REUTERS/Mario Anzuoni

People drive through the Jurassic Quest Experience outside The Rose Bowl Stadium during the outbreak of the coronavirus disease (COVID-19), in Pasadena, California, U.S., January 15, 2021. REUTERS/Mario Anzuoni

U.S. Health and Human Services (HHS) Secretary Alex Azar speaks during a news conference in the Brady Press Briefing Room of the White House in Washington, U.S. August 23, 2020. Picture taken August 23, 2020. REUTERS/Erin Scott

U.S. President Donald Trump and Health and Human Services (HHS) Secretary Alex Azar attend a news conference about the latest coronavirus disease (COVID-19) developments, in the Brady Press Briefing Room of the White House in Washington, U.S. August 23, 2020. Picture taken August 23, 2020. REUTERS/Erin Scott

A Falck/Care Ambulance drives to a patient, as the spread of the coronavirus disease (COVID-19) continues, in Pomona, California, U.S., January 14, 2021. Picture taken January 14, 2021. REUTERS/Lucy Nicholson

Falck/Care Ambulance Service EMT Jake Hailey waits for calls, as the spread of the coronavirus disease (COVID-19) continues, in Pomona, California, U.S., January 14, 2021. Picture taken January 14, 2021. REUTERS/Lucy Nicholson