French President Emmanuel Macron (C) and French Health Minister Olivier Veran (3rd R) visit a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron and French Health Minister Olivier Veran (R) visit a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron talks to the press as he visits a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron, Health Minister Olivier Veran, Commander of the Paris fire department, the Brigade de sapeurs-pompiers de Paris (BSPP), General Jean-Marie Gontier, Junior Minister of Citizenship Marlene Schiappa, Mayor of Paris' 15th Arrondissement Philippe Goujon, and Paris Police Prefect Didier Lallement visit a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron and Commander of the Paris fire department, the Brigade de sapeurs-pompiers de Paris (BSPP), General Jean-Marie Gontier visit a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron (C) and French Health Minister Olivier Veran (3rd R) visit a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron and Commander of the Paris fire department, the Brigade de sapeurs-pompiers de Paris (BSPP), General Jean-Marie Gontier speak with a member of the public as they visit a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron and Commander of the Paris fire department, the Brigade de sapeurs-pompiers de Paris (BSPP), General Jean-Marie Gontier visit a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron and Commander of the Paris fire department, the Brigade de sapeurs-pompiers de Paris (BSPP), General Jean-Marie Gontier visit a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron and Commander of the Paris fire department, the Brigade de sapeurs-pompiers de Paris (BSPP), General Jean-Marie Gontier visit a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron (C) and Commander of the Paris fire department, the Brigade de sapeurs-pompiers de Paris (BSPP), General Jean-Marie Gontier (C-L) visit a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron speaks with a member of the public as he visits a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron speaks with a member of the public as he visits a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron visits a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron visits a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron visits a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron visits a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron visits a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron talks to the press as he visits a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron visits a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron visits a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron talks to a man waiting to be vaccinated as he visits a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron talks to the press as he visits a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron visits a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

French President Emmanuel Macron visits a large-capacity COVID-19 vaccination center during its inauguration at Porte de Versailles convention centre in Paris, France May 6, 2021. Christophe Archambault/Pool via REUTERS

Nuns from the Tyburn Convent leave a polling station during local elections, in London, Britain May 6, 2021. REUTERS/Henry Nicholls

Nuns from the Tyburn Convent leave a polling station during local elections, in London, Britain May 6, 2021. REUTERS/Henry Nicholls

Nuns from the Tyburn Convent leave a polling station during local elections, in London, Britain May 6, 2021. REUTERS/Henry Nicholls TPX IMAGES OF THE DAY

The Las Vegas Convention Center is seen, in Las Vegas, Nevada, U.S., May 4, 2021. REUTERS/Mike Blake

The Las Vegas Convention Center is seen, in Las Vegas, Nevada, U.S., May 4, 2021. REUTERS/Mike Blake

Beds are seen at the sleeping area set up inside exhibit hall B of the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

Mayor Robert Garcia shows the area set up inside exhibit hall B of the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

Items are put on the bed at the sleeping area set up inside exhibit hall B of the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

A bed is seen at the sleeping area set up inside exhibit hall B of the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

Congressman Alan Lowenthal and Mayor Robert Garcia enter exhibit hall A of the Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

Beds are seen at the sleeping area set up inside exhibit hall B of the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

A general view of the area set up inside exhibit hall B of the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

Commander Nick Munoz speaks to city officials about the medical care children will receive as city officials tour the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

The welcoming area set up inside exhibit hall B of the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

Bonnie Preston, acting regional director for HHS region 9 speaks to city officials before they tour the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS REFILE - CORRECTING ID

Congressman Alan Lowenthal and Mayor Robert Garcia enter the exhibit hall of the Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

Mayor Robert Garcia speaks to officials in the recreation area that children will have access to at the Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

Mayor Robert Garcia speaks to officials in the recreation area that children will have access to at the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

Medical exam rooms is to be set up inside exhibit hall A of the Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

Long Beach Mayor Robert Garcia speaks at the sleeping area set up inside an exhibit hall B of the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

Site leader Alex Sanchez speaks to city officials before they tour the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

A general view of the sleeping area set up inside exhibit hall B of the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

A general view of the area set up inside exhibit hall B of the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

Recreation items that children will have access to at the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

Recreation items that children will have access to at the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

Bonnie Preston, acting regional director for HHS region 9 speaks to city officials during the tour of the Long Beach Convention Center where migrant children found at the border without a parent will be temporarily housed, in Long Beach, U.S., April 22, 2021. The center is able to house up to 1,000 children. Picture taken April 22, 2021. Brittany Murray/Pool via REUTERS

A pair of 'Nike Air Yeezy 1' prototype sneakers, designed by Kanye West, are displayed at the Hong Kong Convention and Exhibition Centre before going up for private sale at Sotheby's, in Hong Kong, China April 16, 2021. REUTERS/Joyce Zhou

A pair of 'Nike Air Yeezy 1' prototype sneakers designed by Kanye West, are displayed at the Hong Kong Convention and Exhibition Centre before going up for private sale at Sotheby's, in Hong Kong, China April 16, 2021. REUTERS/Joyce Zhou

A visitor looks at a pair of 'Nike Air Yeezy 1' prototype sneakers designed by Kanye West, before the sneakers go up for private sale at Sotheby's, at the Hong Kong Convention and Exhibition Centre, in Hong Kong, China April 16, 2021. REUTERS/Joyce Zhou

A man walks past a Sotheby's sign at its spring sales exhibition at the Hong Kong Convention and Exhibition Centre in Hong Kong, China April 16, 2021. REUTERS/Joyce Zhou

A portrait of Britain's Prince Philip, the Duke of Edinburgh is seen inside The Convent to mark his death, in Gibraltar April 10, 2021. REUTERS/Jon Nazca

A National Guard soldier looks on as people stand in line at the Jacob K. Javits Convention Center Vaccination Center as Governor Andrew M. Cuomo announces the start of the statewide "Vaccinate NY" ad campaign to encourage all New Yorkers to get vaccinated, in New York City, New York, U.S. April 6, 2021. Timothy A. Clary/Pool via REUTERS TPX IMAGES OF THE DAY

People stand in line at the Jacob K. Javits Convention Center Vaccination Center as Governor Andrew M. Cuomo announces the start of the statewide "Vaccinate NY" ad campaign to encourage all New Yorkers to get vaccinated, in New York City, New York, U.S. April 6, 2021. Timothy A. Clary/Pool via REUTERS

A National Guard soldier looks out the window at the Jacob K. Javits Convention Center as Governor Andrew M. Cuomo announces the start of the statewide "Vaccinate NY" ad campaign to encourage all New Yorkers to get vaccinated, in New York City, New York, U.S. April 6, 2021. Timothy A. Clary/Pool via REUTERS

Governor Andrew M. Cuomo announces the start of the statewide "Vaccinate NY" ad campaign to encourage all New Yorkers to get vaccinated, at the Jacob K. Javits Convention Center, in New York City, New York, U.S. April 6, 2021. Timothy A. Clary/Pool via REUTERS