A technician works on the stage before the start of the Conservative Political Action Conference (CPAC) in Orlando, Florida, U.S., February 25, 2021. REUTERS/Octavio Jones

Signs on stage are shown as technicians work before the start of the Conservative Political Action Conference (CPAC) in Orlando, Florida, U.S., February 25, 2021. REUTERS/Octavio Jones

A technician works on the stage before the start of the Conservative Political Action Conference (CPAC) in Orlando, Florida, U.S., February 25, 2021. REUTERS/Octavio Jones

Technicians work on the stage before the start of the Conservative Political Action Conference (CPAC) in Orlando, Florida, U.S., February 25, 2021. REUTERS/Octavio Jones

An employee works in a copper electrolysis workshop of Kola Mining and Metallurgical Company (Kola MMC), a subsidiary of Nornickel metals and mining company, in the town of Monchegorsk in Murmansk Region, Russia February 25, 2021. REUTERS/Evgenia Novozhenina

An employee works in a nickel electrolysis workshop of Kola Mining and Metallurgical Company (Kola MMC), a subsidiary of Nornickel metals and mining company, in the town of Monchegorsk in Murmansk Region, Russia February 25, 2021. REUTERS/Evgenia Novozhenina

An employee works in a nickel electrolysis workshop of Kola Mining and Metallurgical Company (Kola MMC), a subsidiary of Nornickel metals and mining company, in the town of Monchegorsk in Murmansk Region, Russia February 25, 2021. REUTERS/Evgenia Novozhenina

An employee works in a nickel electrolysis workshop of Kola Mining and Metallurgical Company (Kola MMC), a subsidiary of Nornickel metals and mining company, in the town of Monchegorsk in Murmansk Region, Russia February 25, 2021. REUTERS/Evgenia Novozhenina

An employee works in a workshop of Kola Mining and Metallurgical Company (Kola MMC), a subsidiary of Nornickel metals and mining company, in the town of Monchegorsk in Murmansk Region, Russia February 25, 2021. REUTERS/Evgenia Novozhenina

An employee works in a copper electrolysis workshop of Kola Mining and Metallurgical Company (Kola MMC), a subsidiary of Nornickel metals and mining company, in the town of Monchegorsk in Murmansk Region, Russia February 25, 2021. REUTERS/Evgenia Novozhenina

Employees work in a copper electrolysis workshop of Kola Mining and Metallurgical Company (Kola MMC), a subsidiary of Nornickel metals and mining company, in the town of Monchegorsk in Murmansk Region, Russia February 25, 2021. REUTERS/Evgenia Novozhenina

Vendors work at a vegetable market amid the coronavirus disease (COVID-19) pandemic in Cairo, Egypt February 25, 2021. REUTERS/Mohamed Abd El Ghany

An employee works at a Greek Manpower Employment Organisation (OAED) office in Kalamaki suburb near Athens, Greece, February 15, 2021. Picture taken February 15, 2021. REUTERS/Costas Baltas

An employee works at a Greek Manpower Employment Organisation (OAED) office in Kalamaki suburb near Athens, Greece, February 15, 2021. Picture taken February 15, 2021. REUTERS/Costas Baltas

Kenya Forest Service rangers work to maintain an electrical fence surrounding the Eburru forest reserve, Kenya, January 28, 2021. Picture taken January 28, 2021. REUTERS/Baz Ratner

Tewolde Sebhat, a Class A Driver who has worked for Fry's Electronics for over 19 years, stands for a portrait outside a Fry's Electronics store, after the chain announced that they would cease operations and close all branches due to changing retail conditions and challenges posed by the coronavirus pandemic, in San Jose, California, U.S. February 24, 2021. Sebhat says he is not too worried about himself, because he knows he can find work easily as a driver. He does worry about many of colleagues who may not as easily find other employment. REUTERS/Brittany Hosea-Small

Tony Islas, owner of Cambrian Appliances, knocks on the receiving door entrance at a Fry's Electronics store, after the chain announced that they would cease operations and close all branches due to changing retail conditions and challenges posed by the coronavirus pandemic, in Fremont, California, U.S. February 24, 2021. Islas has been working with Fry's for at least 30 years picking up their old appliances and disposing or reselling them. He arrived today to pick up several appliances only to be met with locked doors. REUTERS/Brittany Hosea-Small

Matt Strickland, owner of Gourmeltz restaurant in Fredericksburg, Virginia, continues to operate his restaurant even though he said his license had been revoked by health officials for failing to comply with coronavirus disease (COVID-19) restrictions is seen in his restaurant in Fredericksburg, Virginia, U.S., February 12, 2021. Picture taken February 12, 2021. REUTERS/Kevin Fogarty

Matt Strickland, owner of Gourmeltz restaurant in Fredericksburg, Virginia, continues to operate his restaurant even though he said his license had been revoked by health officials for failing to comply with coronavirus disease (COVID-19) restrictions is seen in his restaurant in Fredericksburg, Virginia, U.S., February 12, 2021. Picture taken February 12, 2021. REUTERS/Kevin Fogarty

Members of the media work as police officers stand guard outside King Edward VII's Hospital, where Britain's Prince Philip was admitted, in London, Britain, February 24, 2021. REUTERS/Paul Childs

Members of the media work as police officers stand guard outside King Edward VII's Hospital, where Britain's Prince Philip was admitted, in London, Britain, February 24, 2021. REUTERS/Paul Childs

Members of a Bolivian military aircraft crew work on a container of China's Sinopharm coronavirus disease (COVID-19) vaccine after its arrival at the military airport in El Alto, on the outskirts of La Paz, Bolivia, February 24, 2021. REUTERS/David Mercado

A crew member of a Bolivian military aircraft works on a container of China's Sinopharm coronavirus disease (COVID-19) vaccine that arrived at the military airport in El Alto, on the outskirts of La Paz, Bolivia, February 24, 2021. REUTERS/David Mercado

Medical staff work at the intensive care unit (ICU) of the Sotiria hospital, amid the coronavirus disease (COVID-19) pandemic, in Athens, Greece, February 24, 2021. REUTERS/Giorgos Moutafis

A technician works at aerospace spare parts production in SERMP, a Casablanca-based company that supplies parts to French aircraft engine maker Safran, in Casablanca, Morocco February 23, 2021. Picture taken February 23, 2021. REUTERS/Abdelhak Balhaki

A technician works inside SERMP, a Casablanca-based company that supplies parts to French aircraft engine maker Safran, in Casablanca, Morocco February 23, 2021. Picture taken February 23, 2021. REUTERS/Abdelhak Balhaki

A technician works on a medical respirator in SERMP, a Casablanca-based company that supplies parts to French aircraft engine maker Safran, in Casablanca, Morocco February 23, 2021. Picture taken February 23, 2021. REUTERS/Abdelhak Balhaki

Technicians work at CETIM Maroc company in Casablanca, Morocco February 23, 2021. Picture taken February 23, 2021. REUTERS/Abdelhak Balhaki

A technician works on a medical respirator in SERMP, a Casablanca-based company that supplies parts to French aircraft engine maker Safran, in Casablanca, Morocco February 23, 2021. Picture taken February 23, 2021. REUTERS/Abdelhak Balhaki

Employees work next to tank turrets at the Kyiv Armoured Plant in Kyiv, Ukraine February 24, 2021. REUTERS/Valentyn Ogirenko

Nurse Ines Lopes drives to work the night shift at Sao Jose Hospital, Intensive Care Unit (ICU) during the coronavirus disease (COVID-19) pandemic in Lisbon, Portugal, February 18, 2021. Picture taken February 18, 2021. REUTERS/Pedro Nunes

Nurse Ines Lopes works in a room with a COVID-19 patient at the night shift at Sao Jose Hospital, Intensive Care Unit (ICU) during the coronavirus disease (COVID-19) pandemic in Lisbon, Portugal, February 19, 2021. Picture taken February 19, 2021. REUTERS/Pedro Nunes

Nurse Ines Lopes arrives to work the night shift at Sao Jose Hospital, Intensive Care Unit (ICU) during the coronavirus disease (COVID-19) pandemic in Lisbon, Portugal, February 18, 2021. Picture taken February 18, 2021. REUTERS/Pedro Nunes

Nurse Ines Lopes works the night shift at Sao Jose Hospital, Intensive Care Unit (ICU) during the coronavirus disease (COVID-19) pandemic in Lisbon, Portugal, February 18, 2021. Picture taken February 18, 2021. REUTERS/Pedro Nunes

Nurse Ines Lopes works the night shift at Sao Jose Hospital, Intensive Care Unit (ICU) during the coronavirus disease (COVID-19) pandemic in Lisbon, Portugal, February 18, 2021. Picture taken February 18, 2021. REUTERS/Pedro Nunes

Nurse Ines Lopes works the night shift at Sao Jose Hospital, Intensive Care Unit (ICU) during the coronavirus disease (COVID-19) pandemic in Lisbon, Portugal, February 19, 2021. Picture taken February 19, 2021. REUTERS/Pedro Nunes

Nurse Ines Lopes arrives to work the night shift at Sao Jose Hospital, Intensive Care Unit (ICU) during the coronavirus disease (COVID-19) pandemic in Lisbon, Portugal, February 18, 2021. Picture taken February 18, 2021. REUTERS/Pedro Nunes

Nurse Ines Lopes works in a room with a COVID-19 patient at the night shift at Sao Jose Hospital, Intensive Care Unit (ICU) during the coronavirus disease (COVID-19) pandemic in Lisbon, Portugal, February 19, 2021. Picture taken February 19, 2021. REUTERS/Pedro Nunes

Nurse Ines Lopes works in a room with a COVID-19 patient at the night shift at Sao Jose Hospital, Intensive Care Unit (ICU) during the coronavirus disease (COVID-19) pandemic in Lisbon, Portugal, February 19, 2021. Picture taken February 19, 2021. REUTERS/Pedro Nunes

Nurse Ines Lopes arrives to work the night shift at Sao Jose Hospital, Intensive Care Unit (ICU) during the coronavirus disease (COVID-19) pandemic in Lisbon, Portugal, February 18, 2021. Picture taken February 18, 2021. REUTERS/Pedro Nunes

Nurse Ines Lopes works in a room with a COVID-19 patient at the night shift at Sao Jose Hospital, Intensive Care Unit (ICU) during the coronavirus disease (COVID-19) pandemic in Lisbon, Portugal, February 19, 2021. Picture taken February 19, 2021. REUTERS/Pedro Nunes

Nurse Ines Lopes works at Sao Jose Hospital, Intensive Care Unit (ICU) during the coronavirus disease (COVID-19) pandemic in Lisbon, Portugal, February 19, 2021. Picture taken February 19, 2021. REUTERS/Pedro Nunes

Nurse Ines Lopes works in a room with a COVID-19 patient at the night shift at Sao Jose Hospital, Intensive Care Unit (ICU) during the coronavirus disease (COVID-19) pandemic in Lisbon, Portugal, February 19, 2021. Picture taken February 19, 2021. REUTERS/Pedro Nunes

Nurse Ines Lopes works the night shift at Sao Jose Hospital, Intensive Care Unit (ICU) during the coronavirus disease (COVID-19) pandemic in Lisbon, Portugal, February 19, 2021. Picture taken February 19, 2021. REUTERS/Pedro Nunes

Media members work as police officers stand outside King Edward VII's Hospital, where Britain's Prince Philip was admitted, in London, Britain, February 24, 2021. REUTERS/Henry Nicholls

Job seekers wait beside a road for casual work offered by passing motorists during the coronavirus disease (COVID-19) outbreak in Eikenhof, south of Johannesburg, South Africa, February 24, 2021. REUTERS/Siphiwe Sibeko

Job seekers wait beside a road for casual work offered by passing motorists during the coronavirus disease (COVID-19) outbreak in Eikenhof, south of Johannesburg, South Africa, February 24, 2021. REUTERS/Siphiwe Sibeko

Members of the media work outside King Edward VII's Hospital, where Britain's Prince Philip was admitted, in London, Britain, February 23, 2021. REUTERS/Henry Nicholls

Members of the media work outside King Edward VII's Hospital, where Britain's Prince Philip was admitted, in London, Britain, February 23, 2021. REUTERS/Henry Nicholls

Members of the media work outside King Edward VII's Hospital, where Britain's Prince Philip was admitted, in London, Britain, February 23, 2021. REUTERS/Henry Nicholls TPX IMAGES OF THE DAY

A fishmonger works at a small market, amid the outbreak of the coronavirus disease (COVID-19), in Buckingham, Britain, February 23, 2021. REUTERS/Andrew Boyers

A fishmonger works at a small market, amid the outbreak of the coronavirus disease (COVID-19), in Buckingham, Britain, February 23, 2021. REUTERS/Andrew Boyers

A medical technician works at the Institute for Forensic Medicine of Belgrade's Medical Faculty, in Belgrade, Serbia, February 22, 2021. Picture taken February 22, 2021. REUTERS/Marko Djurica

A medical technician works at the Institute for Forensic Medicine of Belgrade's Medical Faculty, in Belgrade, Serbia, February 22, 2021. Picture taken February 22, 2021. REUTERS/Marko Djurica

A medical technician works at the Institute for Forensic Medicine of Belgrade's Medical Faculty, in Belgrade, Serbia, February 22, 2021. Picture taken February 22, 2021. REUTERS/Marko Djurica

Milenko Bogdanovic, a forensic pathologist works at the Institute for Forensic Medicine of Belgrade's Medical Faculty, in Belgrade, Serbia, February 22, 2021. Picture taken February 22, 2021. REUTERS/Marko Djurica

A forensic toxicology chemist works at the Institute for Forensic Medicine of Belgrade's Medical Faculty, in Belgrade, Serbia, February 22, 2021. Picture taken February 22, 2021. REUTERS/Marko Djurica

A forensic toxicology chemist works at the Institute for Forensic Medicine of Belgrade's Medical Faculty, in Belgrade, Serbia, February 22, 2021. Picture taken February 22, 2021. REUTERS/Marko Djurica

A forensic toxicology chemist works at the Institute for Forensic Medicine of Belgrade's Medical Faculty, in Belgrade, Serbia, February 22, 2021. Picture taken February 22, 2021. REUTERS/Marko Djurica