Soccer Football - FIFA World Cup Qatar 2022 - Round of 16 - Morocco v Spain - Education City Stadium, Al Rayyan, Qatar - December 6, 2022 Spain's Jordi Alba receives medical attention after sustaining an injury REUTERS/Bernadett Szabo 

Soccer Football - FIFA World Cup Qatar 2022 - Round of 16 - Morocco v Spain - Education City Stadium, Al Rayyan, Qatar - December 6, 2022 Spain's Jordi Alba receives medical attention after sustaining an injury REUTERS/Bernadett Szabo 

Soccer Football - FIFA World Cup Qatar 2022 - Group H - South Korea v Portugal - Education City Stadium, Al Rayyan, Qatar - December 2, 2022 South Korea's Kim Young-gwon receives medical attention after sustaining an injury as Kwon Kyung-won looks on REUTERS/Fabrizio Bensch 

Soccer Football - FIFA World Cup Qatar 2022 - Group H - South Korea v Portugal - Education City Stadium, Al Rayyan, Qatar - December 2, 2022 South Korea's Kim Young-gwon receives medical attention after sustaining an injury REUTERS/Molly Darlington 

Soccer Football - FIFA World Cup Qatar 2022 - Group H - South Korea v Portugal - Education City Stadium, Al Rayyan, Qatar - December 2, 2022 South Korea's Kim Young-gwon receives medical attention after sustaining an injury REUTERS/Molly Darlington 

Soccer Football - FIFA World Cup Qatar 2022 - Group H - South Korea v Portugal - Education City Stadium, Al Rayyan, Qatar - December 2, 2022 South Korea's Kim Seung-gyu signals for medical attention after teammate Kim Young-gwon sustains an injury REUTERS/Molly Darlington 

Soccer Football - FIFA World Cup Qatar 2022 - Group H - South Korea v Ghana - Education City Stadium, Al Rayyan, Qatar - November 28, 2022 South Korea's Hwang In-beom receives medical attention after sustaining an injury REUTERS/Molly Darlington 

Soccer Football - FIFA World Cup Qatar 2022 - Group C - Poland v Saudi Arabia - Education City Stadium, Al Rayyan, Qatar - November 26, 2022 Saudi Arabia's Mohamed Kanno reacts after receiving medical attention REUTERS/Molly Darlington 

Soccer Football - FIFA World Cup Qatar 2022 - Group C - Poland v Saudi Arabia - Education City Stadium, Al Rayyan, Qatar - November 26, 2022 Saudi Arabia's Ali Al Bulayhi walks off the pitch after receiving medical attention REUTERS/Molly Darlington 

Soccer Football - FIFA World Cup Qatar 2022 - Group C - Poland v Saudi Arabia - Education City Stadium, Al Rayyan, Qatar - November 26, 2022 Saudi Arabia's Ali Al Bulayhi receives medical attention REUTERS/Jennifer Lorenzini 

Soccer Football - FIFA World Cup Qatar 2022 - Group C - Poland v Saudi Arabia - Education City Stadium, Al Rayyan, Qatar - November 26, 2022 Saudi Arabia's Ali Al Bulayhi receives medical attention REUTERS/Jennifer Lorenzini 

Soccer Football - FIFA World Cup Qatar 2022 - Group C - Poland v Saudi Arabia - Education City Stadium, Al Rayyan, Qatar - November 26, 2022 Saudi Arabia's Ali Al Bulayhi receives medical attention REUTERS/Molly Darlington 

Soccer Football - FIFA World Cup Qatar 2022 - Group H - Uruguay v South Korea - Education City Stadium, Al Rayyan, Qatar - November 24, 2022 South Korea's Son Heung-min receives medical attention after sustaining an injury REUTERS/Kim Hong-Ji 

Soccer Football - FIFA World Cup Qatar 2022 - Group H - Uruguay v South Korea - Education City Stadium, Al Rayyan, Qatar - November 24, 2022 South Korea's Kim Min-jae receives medical attention after sustaining an injury REUTERS/Bernadett Szabo 

Soccer Football - FIFA World Cup Qatar 2022 - Group H - Uruguay v South Korea - Education City Stadium, Al Rayyan, Qatar - November 24, 2022 South Korea's Kim Min-jae receives medical attention as Lee Jae-sung get a drink during a break in play REUTERS/Molly Darlington 

Soccer Football - FIFA World Cup Qatar 2022 - Group H - Uruguay v South Korea - Education City Stadium, Al Rayyan, Qatar - November 24, 2022 South Korea's Son Heung-min receives medical attention after sustaining an injury REUTERS/Kai Pfaffenbach 

Soccer Football - FIFA World Cup Qatar 2022 - Group H - Uruguay v South Korea - Education City Stadium, Al Rayyan, Qatar - November 24, 2022 South Korea's Son Heung-min receives medical attention as Kim Jin-su looks on REUTERS/Molly Darlington 

Soccer Football - FIFA World Cup Qatar 2022 - Group H - Uruguay v South Korea - Education City Stadium, Al Rayyan, Qatar - November 24, 2022 General view as the medical staff look on before the match REUTERS/Kai Pfaffenbach 

Centers for Disease Control and Prevention (CDC) Director Rochelle Walensky looks up at a video monitor of Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases and chief medical adviser to President Biden, as they testify before a Senate Health, Education, Labor, and Pensions hearing to examine an update on the ongoing Federal response to COVID-19, at the U.S. Capitol in Washington, U.S., June 16, 2022. REUTERS/Kevin Lamarque 

Centers for Disease Control and Prevention (CDC) Director Rochelle Walensky looks up at a video monitor with Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases and chief medical adviser to President Biden, as they testify before a Senate Health, Education, Labor, and Pensions hearing to examine an update on the ongoing Federal response to COVID-19, at the U.S. Capitol in Washington, U.S., June 16, 2022. REUTERS/Kevin Lamarque      

George Daley, Dean of the Medical School, attends Harvard University's 371st Commencement Exercises in Cambridge, Massachusetts, U.S., May 26, 2022. REUTERS/Brian Snyder 

George Daley, Dean of the Medical School, speaks during Harvard University's 371st Commencement Exercises in Cambridge, Massachusetts, U.S., May 26, 2022. REUTERS/Brian Snyder 

A general view of the Harvard Medical School in the Longwood Medical Area in Boston, Massachusetts, U.S., May 15, 2022. Picture taken with a drone. Picture taken May 15, 2022. To match Special Report HEALTH-HEARTS/STEM-CELLS REUTERS/Brian Snyder 

A general view of the Harvard Medical School in the Longwood Medical Area in Boston, Massachusetts, U.S., May 15, 2022. Picture taken with a drone. Picture taken May 15, 2022. To match Special Report HEALTH-HEARTS/STEM-CELLS REUTERS/Brian Snyder 

A general view of the Harvard Medical School in the Longwood Medical Area in Boston, Massachusetts, U.S., May 15, 2022. Picture taken with a drone. Picture taken May 15, 2022. To match Special Report HEALTH-HEARTS/STEM-CELLS REUTERS/Brian Snyder 

A general view of the Harvard Medical School in the Longwood Medical Area in Boston, Massachusetts, U.S., May 15, 2022. Picture taken with a drone. Picture taken May 15, 2022. To match Special Report HEALTH-HEARTS/STEM-CELLS REUTERS/Brian Snyder 

A general view of the Harvard Medical School in the Longwood Medical Area in Boston, Massachusetts, U.S., May 15, 2022. Picture taken with a drone. Picture taken May 15, 2022. To match Special Report HEALTH-HEARTS/STEM-CELLS REUTERS/Brian Snyder 

A general view of the Harvard Medical School in the Longwood Medical Area in Boston, Massachusetts, U.S., May 15, 2022. Picture taken with a drone. Picture taken May 15, 2022. To match Special Report HEALTH-HEARTS/STEM-CELLS REUTERS/Brian Snyder 

A general view of the Harvard Medical School in the Longwood Medical Area in Boston, Massachusetts, U.S., May 15, 2022. Picture taken with a drone. Picture taken May 15, 2022. To match Special Report HEALTH-HEARTS/STEM-CELLS REUTERS/Brian Snyder 

Mandisa Malindisa, a fourth-year medical student who was studying in Ukraine before the invasion looks on during her interview with Reuters in Johannesburg, South Africa, March 11, 2022. Picture taken March 11, 2022. REUTERS/Tim Cocks 

FILE PHOTO: Vuhlari Mtonga, a medical student, one of the South African students who were studying in Ukraine, is welcomed by her sister, Mikateko Mtonga after arriving from the country invaded by Russia, at the OR Tambo International Airport in Johannesburg, South Africa, March 10, 2022. REUTERS/Siphiwe Sibeko/File Photo 

A molecular Biologists prepares samples during the site visit by representatives of the Medicines Patent Pool, France and other European Union member states, at the Centre for Educational Research and Innovation (CERI) in Cape Town, South Africa, February 4, 2022. REUTERS/Shelley Christians 

Medical equipment sits in the snow as police and paramedics respond to a shooting outside of the South Education Center school in Richfield, Minnesota, U.S., February 1, 2022. REUTERS/Christian Monterrosa 

Medical equipment sits next to bloodstains in the snow as police and paramedics respond to a shooting outside of the South Education Center school in Richfield, Minnesota, U.S., February 1, 2022. REUTERS/Christian Monterrosa 

U.S. Senator Roger Marshall (R-KS) shows the yearly pay received by Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases and White House Chief Medical Advisor during a Senate Health, Education, Labor, and Pensions Committee hearing to examine the federal response to the coronavirus disease (COVID-19) and new emerging variants at Capitol Hill in Washington, D.C., U.S. January 11, 2022. Greg Nash/Pool via REUTERS 

White House Chief Medical Adviser Anthony Fauci adjusts his mask during the Senate Health, Education, Labor and Pensions hearing on "Next Steps: The Road Ahead for the COVID-19 Response" on Capitol Hill in Washington, U.S., November 4, 2021. REUTERS/Elizabeth Frantz 

White House Chief Medical Adviser Anthony Fauci listens to other speakers during the Senate Health, Education, Labor and Pensions hearing on "Next Steps: The Road Ahead for the COVID-19 Response" on Capitol Hill in Washington, U.S., November 4, 2021. REUTERS/Elizabeth Frantz 

White House Chief Medical Adviser Anthony Fauci pauses while answering questions during the Senate Health, Education, Labor and Pensions hearing on "Next Steps: The Road Ahead for the COVID-19 Response" on Capitol Hill in Washington, U.S., November 4, 2021. REUTERS/Elizabeth Frantz 

White House Chief Medical Adviser Anthony Fauci reacts while answering questions during the Senate Health, Education, Labor and Pensions hearing on "Next Steps: The Road Ahead for the COVID-19 Response" on Capitol Hill in Washington, U.S., November 4, 2021. REUTERS/Elizabeth Frantz
 

White House Chief Medical Adviser Anthony Fauci listens to other speakers during the Senate Health, Education, Labor and Pensions hearing on "Next Steps: The Road Ahead for the COVID-19 Response" on Capitol Hill in Washington, U.S., November 4, 2021. REUTERS/Elizabeth Frantz 

White House Chief Medical Adviser Anthony Fauci arrives to testify before the Senate Health, Education, Labor and Pensions hearing on "Next Steps: The Road Ahead for the COVID-19 Response" on Capitol Hill in Washington, U.S., November 4, 2021. REUTERS/Elizabeth Frantz 

White House Chief Medical Adviser Anthony Fauci gives his opening statement before the Senate Health, Education, Labor and Pensions hearing on "Next Steps: The Road Ahead for the COVID-19 Response" on Capitol Hill in Washington, U.S., November 4, 2021. REUTERS/Elizabeth Frantz 

White House Chief Medical Adviser Anthony Fauci gives his opening statement before the Senate Health, Education, Labor and Pensions hearing on "Next Steps: The Road Ahead for the COVID-19 Response" on Capitol Hill in Washington, U.S., November 4, 2021. REUTERS/Elizabeth Frantz 

White House Chief Medical Adviser Anthony Fauci gives his opening statement before the Senate Health, Education, Labor and Pensions hearing on "Next Steps: The Road Ahead for the COVID-19 Response" on Capitol Hill in Washington, U.S., November 4, 2021. REUTERS/Elizabeth Frantz 

White House Chief Medical Adviser Anthony Fauci waits to testify before the Senate Health, Education, Labor and Pensions hearing on "Next Steps: The Road Ahead for the COVID-19 Response" on Capitol Hill in Washington, U.S., November 4, 2021. REUTERS/Elizabeth Frantz 

White House Chief Medical Adviser Anthony Fauci waits to testify before the Senate Health, Education, Labor and Pensions hearing on "Next Steps: The Road Ahead for the COVID-19 Response" on Capitol Hill in Washington, U.S., November 4, 2021. REUTERS/Elizabeth Frantz 

White House Chief Medical Adviser Anthony Fauci arrives to testify before a Senate Health, Education, Labor and Pensions hearing on "Next Steps: The Road Ahead for the COVID-19 Response" on Capitol Hill in Washington, U.S., November 4, 2021. REUTERS/Elizabeth Frantz 

Women take care of children underneath a building on stilts during an outreach by healthcare workers who traveled by river into the Amazon rainforest to educate people from the indigenous Urarina community about the coronavirus disease (COVID-19) and offer medical care, in Nueva Union, Peru October 15, 2021. Picture taken October 15, 2021. REUTERS/Sebastian Castaneda 

Doctor Neuson Juran Apaza examines a girl during an outreach by healthcare workers who traveled by river into the Amazon rainforest to educate people from the indigenous Urarina community about the coronavirus disease (COVID-19) and offer medical care, in Mangual, Peru October 13, 2021. Picture taken October 13, 2021. REUTERS/Sebastian Castaneda 

A woman is administered a vaccine for the coronavirus disease (COVID-19) during an outreach by healthcare workers who traveled by river into the Amazon rainforest to educate people from the indigenous Urarina community about the disease and offer medical care, in Santa Hermosa, Peru October 13, 2021. Picture taken October 13, 2021. REUTERS/Sebastian Castaneda 

Community leader Gilberto Inuma, with personnel from the Peruvian Red Cross, speaks to schoolchildren during an outreach by healthcare workers who traveled by river into the Amazon rainforest to educate people from the indigenous Urarina community about the coronavirus disease (COVID-19) and offer medical care, in Copal, Peru October 12, 2021. Picture taken October 12, 2021. REUTERS/Sebastian Castaneda 

People on a small boat ask for gasoline from a group of healthcare workers who traveled by river into the Amazon rainforest to educate people from the indigenous Urarina community about the coronavirus disease (COVID-19) and offer medical care, near San Marcos, Peru October 12, 2021. Picture taken October 12, 2021. REUTERS/Sebastian Castaneda 

A member of the International Red Cross speaks to women during an outreach by healthcare workers who traveled by river into the Amazon rainforest to educate people from the indigenous Urarina community about the coronavirus disease (COVID-19) and offer medical care, in Mangual, Peru October 11, 2021. Picture taken October 11, 2021. REUTERS/Sebastian Castaneda 

A woman is administered a vaccine for the coronavirus disease (COVID-19) during an outreach by healthcare workers who traveled by river into the Amazon rainforest to educate people from the indigenous Urarina population about the disease and offer medical care, in Mangual, Peru October 11, 2021. Picture taken October 11, 2021. REUTERS/Sebastian Castaneda 

A man is administered a vaccine for the coronavirus disease (COVID-19) during an outreach by healthcare workers who traveled by river into the Amazon rainforest to educate people from the indigenous Urarina population about the disease and offer medical care, in Mangual, Peru October 11, 2021. Picture taken October 11, 2021. REUTERS/Sebastian Castaneda 

A man is administered a vaccine for the coronavirus disease (COVID-19) at night during an outreach by healthcare workers who traveled by river into the Amazon rainforest to educate people from the indigenous Urarina community about the disease and offer medical care, in San Marcos, Peru October 11, 2021. Picture taken October 11, 2021. REUTERS/Sebastian Castaneda 

A case of vaccines for the coronavirus disease (COVID-19) is loaded from boat to boat during an outreach by healthcare workers who traveled by river into the Amazon rainforest to educate people from the indigenous Urarina community about the disease and offer medical care, in Mangual, Peru October 11, 2021. Picture taken October 11, 2021. REUTERS/Sebastian Castaneda 

Community leader Mariano Quisto is administered a vaccine for the coronavirus disease (COVID-19) during an outreach by healthcare workers who traveled by river into the Amazon rainforest to educate people from the indigenous Urarina population about the disease and offer medical care, in Mangual, Peru October 11, 2021. Picture taken October 11, 2021. REUTERS/Sebastian Castaneda 

Nurse Diego Sanchez prepares a vaccine for the coronavirus disease (COVID-19) during an outreach by healthcare workers who traveled by river into the Amazon rainforest to educate people from the indigenous Urarina community about the disease and offer medical care, in San Marcos, Peru October 11, 2021. Picture taken October 11, 2021. REUTERS/Sebastian Castaneda 

Doctor Neuson Juran Apaza examines a child during an outreach by healthcare workers who traveled by river into the Amazon rainforest to educate people from the indigenous Urarina community about the coronavirus disease (COVID-19) and offer medical care, in Mangual, Peru October 11, 2021. Picture taken October 11, 2021. REUTERS/Sebastian Castaneda