An EMT with the Arlington Fire Department injects the Moderna COVID-19 vaccine into a patient as people are inoculated against the coronavirus disease (COVID-19) at a vaccination site at the Esports Stadium Arlington & Expo Center in Arlington, Texas, U.S. February 12, 2021. REUTERS/Cooper Neill

People wait in line to be inoculated against the coronavirus disease (COVID-19) at a vaccination site at the Esports Stadium Arlington & Expo Center in Arlington, Texas, U.S. February 12, 2021. REUTERS/Cooper Neill

People wait in line to be inoculated against the coronavirus disease (COVID-19) at a vaccination site at the Esports Stadium Arlington & Expo Center in Arlington, Texas, U.S. February 12, 2021. REUTERS/Cooper Neill

A detail view of a Moderna COVID-19 vaccine vial at a vaccination site at the Esports Stadium Arlington & Expo Center in Arlington, Texas, U.S. February 12, 2021. REUTERS/Cooper Neill

A detail view of a Moderna COVID-19 vaccine box at a vaccination site at the Esports Stadium Arlington & Expo Center in Arlington, Texas, U.S. February 12, 2021. REUTERS/Cooper Neill

An EMT with the Texas Department of State Health Services draws the Moderna COVID-19 vaccine into a syringe before people are inoculated against the coronavirus disease (COVID-19) at a vaccination site at the Esports Stadium Arlington & Expo Center in Arlington, Texas, U.S. February 12, 2021. REUTERS/Cooper Neill

An EMT with the Texas Department of State Health Services draws the Moderna COVID-19 vaccine into a syringe before people are inoculated against the coronavirus disease (COVID-19) at a vaccination site at the Esports Stadium Arlington & Expo Center in Arlington, Texas, U.S. February 12, 2021. REUTERS/Cooper Neill

A patient is injected with the Moderna COVID-19 vaccine as people are inoculated against the coronavirus disease (COVID-19) at a vaccination site at the Esports Stadium Arlington & Expo Center in Arlington, Texas, U.S. February 12, 2021. REUTERS/Cooper Neill

A patient is injected with the Moderna COVID-19 vaccine as people are inoculated against the coronavirus disease (COVID-19) at a vaccination site at the Esports Stadium Arlington & Expo Center in Arlington, Texas, U.S. February 12, 2021. REUTERS/Cooper Neill

An EMT with the Texas Department of State Health Services draws the Moderna COVID-19 vaccine into a syringe before people are inoculated against the coronavirus disease (COVID-19) at a vaccination site at the Esports Stadium Arlington & Expo Center in Arlington, Texas, U.S. February 12, 2021. REUTERS/Cooper Neill

An EMT with the Texas Department of State Health Services draws the Moderna COVID-19 vaccine into a syringe before people are inoculated against the coronavirus disease (COVID-19) at a vaccination site at the Esports Stadium Arlington & Expo Center in Arlington, Texas, U.S. February 12, 2021. REUTERS/Cooper Neill

An AEMT with the Texas Department of State Health Services injects the Moderna COVID-19 vaccine into a patient as people are inoculated against the coronavirus disease (COVID-19) at a vaccination site at the Esports Stadium Arlington & Expo Center in Arlington, Texas, U.S. February 12, 2021. REUTERS/Cooper Neill

People are inoculated against coronavirus disease (COVID-19) at a vaccination site at the Esports Stadium Arlington & Expo Center in Arlington, Texas, U.S. February 12, 2021. REUTERS/Cooper Neill

Toyobo's staff shows the 'COCOMI' clothing, which can acquire physiological information data of the person who wears it, during its demonstration at the Wearable Expo in Tokyo, Japan, January 20, 2021. REUTERS/Kim Kyung-Hoon

Toyobo's staff shows the 'COCOMI' clothing, which can acquire physiological information data, and a smartphone displaying the measured heart rate during its demonstration at the Wearable Expo in Tokyo, Japan, January 20, 2021. REUTERS/Kim Kyung-Hoon

Hitachi's 3D LiDAR solution tracking visitors' movements and providing data in real time is displayed at its booth during the Wearable Expo in Tokyo, Japan, January 20, 2021. REUTERS/Kim Kyung-Hoon

A staff wearing a protective mask, amid the coronavirus disease (COVID-19) outbreak, demonstrates a thermal sensing terminal of Hitachi's 3D LiDAR solution at the Wearable Expo in Tokyo, Japan, January 20, 2021. REUTERS/Kim Kyung-Hoon

An event staff wearing a protective mask and a face shield checks the temperature of visitors at the Wearable Expo, amid the coronavirus disease (COVID-19) outbreak, at an exhibition center in Tokyo, Japan, January 20, 2021. REUTERS/Kim Kyung-Hoon

People walk at the site of Dubai Expo 2020 in Dubai, United Arab Emirates January 16, 2021. REUTERS/Rula Rouhana

The sign of Dubai Expo 2020 is seen at the entrance of the site in Dubai, United Arab Emirates January 16, 2021. REUTERS/Rula Rouhana

A host interviews a guest at a booth during 2020 Taipei International Finance Expo in Taipei, Taiwan, November 27, 2020. REUTERS/Ann Wang

A speaker talks about the stock market during 2020 Taipei International Finance Expo in Taipei, Taiwan, November 27, 2020. REUTERS/Ann Wang

Customers talk against a backboard with signs of cryptocurrency during 2020 Taipei International Finance Expo in Taipei, Taiwan, November 27, 2020. REUTERS/Ann Wang

A poster shows an app with various currencies during 2020 Taipei International Finance Expo in Taipei, Taiwan, November 27, 2020. REUTERS/Ann Wang

FILE PHOTO: Tourists wearing face masks listen to an instructor inside Hong Kong News-Expo during a Hong Kong Tourism Board's free local tour, following the coronavirus disease (COVID-19) outbreak, in Hong Kong, China November 1,2020. REUTERS/Tyrone Siu/File Photo

James Peng, Chief Executive Office (CEO) of autonomous driving technology startup Pony.ai, speaks at a product event during the third China International Import Expo (CIIE) in Shanghai, China November 6, 2020. REUTERS/Yilei Sun

Australian flag cocktail sticks are placed on plates at Australia's food booth at the third China International Import Expo (CIIE) in Shanghai, China November 6, 2020. REUTERS/Aly Song

An AstraZeneca sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 6, 2020. REUTERS/Aly Song

A chef cooks Australian lobster at at an Australia's food booth at the third China International Import Expo (CIIE) in Shanghai, China November 6, 2020. REUTERS/Aly Song

An AstraZeneca sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 6, 2020. REUTERS/Aly Song

People take pictures of Australian lobster at an Australia food booth during the third China International Import Expo (CIIE) in Shanghai, China November 6, 2020. REUTERS/Aly Song

An A2 milk sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 6, 2020. REUTERS/Aly Song

A sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 6, 2020. REUTERS/Aly Song

Australian flag cocktail sticks are seen at Australia's food booth at the third China International Import Expo (CIIE) in Shanghai, China November 6, 2020. REUTERS/Aly Song

A Bellamy's Organic sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 6, 2020. REUTERS/Aly Song

Australian and Chinese flags are seen at a Woolworths booth during the third China International Import Expo (CIIE) in Shanghai, China November 6, 2020. REUTERS/Aly Song

Australian and Chinese flags are seen at the third China International Import Expo (CIIE) in Shanghai, China November 6, 2020. REUTERS/Aly Song

Australian cocktail sticks are seen at Australia's food booth at the third China International Import Expo (CIIE) in Shanghai, China November 6, 2020. REUTERS/Aly Song

President of GM China Julian Blissett speaks to the media at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

Roche sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

Roche sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

Pfizer signs are seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

Bayer signs are seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

Tesla sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

Bayer signs are seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

Tesla sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

General Motors sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

General Motors sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

Samusng sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

GlaxoSmithKline (GSK) sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

GlaxoSmithKline (GSK) sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

Johnson & Johnson sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

GlaxoSmithKline (GSK) sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

A Microsoft sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

A Qualcomm sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

An NBA sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

A Dow sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

A Qualcomm sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

A Qualcomm sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song

A Qualcomm sign is seen at the third China International Import Expo (CIIE) in Shanghai, China November 5, 2020. REUTERS/Aly Song