U.S. Second Gentleman Doug Emhoff listens to Greg Heller-LaBelle of the Colony Meadery, during a tour of the Bridgeworks Enterprise Center, a small business, in Allentown, Pennsylvania, U.S. May 5, 2021. Ed Jones/Pool via REUTERS

A 3D-printed Telegram app logo, small toy figurines, a syringe and vial labelled "coronavirus disease (COVID-19) vaccine" are seen in front of India flag in this illustration taken May 4, 2021. REUTERS/Dado Ruvic/Illustration

3D-printed small toy figurines, a syringe and vial labelled "coronavirus disease (COVID-19) vaccine" are seen in front of India flag in this illustration taken May 4, 2021. REUTERS/Dado Ruvic/Illustration

A 3D-printed Telegram app logo and vials labelled "coronavirus disease (COVID-19) vaccine" are seen in front of India flag in this illustration taken May 4, 2021. REUTERS/Dado Ruvic/Illustration

A 3D-printed Telegram app logo, a syringe and vial labelled "coronavirus disease (COVID-19) vaccine" are seen in front of India flag in this illustration taken May 4, 2021. REUTERS/Dado Ruvic/Illustration

A 3D-printed Telegram app logo, a syringe and vials labelled "coronavirus disease (COVID-19) vaccine" are seen in front of India flag in this illustration taken May 4, 2021. REUTERS/Dado Ruvic/Illustration

Vials labelled "AstraZeneca, Pfizer - Biontech, Johnson&Johnson, Sputnik V coronavirus disease (COVID-19) vaccine" are seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

Vials labelled "AstraZeneca, Pfizer - Biontech, Johnson&Johnson, Sputnik V coronavirus disease (COVID-19) vaccine" are seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

Vials labelled "Sputnik V coronavirus disease (COVID-19) vaccine" are seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

A vial labelled "Sputnik V coronavirus disease (COVID-19) vaccine" is seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

A vial labelled "Johnson&Johnson coronavirus disease (COVID-19) vaccine" is seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

Vials labelled "Moderna, AstraZeneca, Pfizer - Biontech, Johnson&Johnson, Sputnik V coronavirus disease (COVID-19) vaccine" are seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

A vial labelled "AstraZeneca coronavirus disease (COVID-19) vaccine" is seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

A vial labelled "Sputnik V coronavirus disease (COVID-19) vaccine" is seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

A vial labelled "Johnson&Johnson coronavirus disease (COVID-19) vaccine" is seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

A vial labelled "Sihopharm coronavirus disease (COVID-19) vaccine" is seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

Vials labelled "Sputnik V, Sihopharm coronavirus disease (COVID-19) vaccine" are seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

Vials labelled "Moderna, Johnson&Johnson, Pfizer - Biontech coronavirus disease (COVID-19) vaccine" are seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

Vials labelled "Johnson&Johnson, Pfizer - Biontech, AstraZeneca coronavirus disease (COVID-19) vaccine" are seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

Vials labelled "Johnson&Johnson, Pfizer - Biontech, AstraZeneca, Sputnik V coronavirus disease (COVID-19) vaccine" are seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

Vials labelled "Moderna, AstraZeneca, Pfizer - Biontech, Johnson&Johnson, Sputnik V coronavirus disease (COVID-19) vaccine" are seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

Vials labelled "Pfizer - Biontech, Johnson&Johnson, Sputnik V coronavirus disease (COVID-19) vaccine" are seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

Vials labelled "AstraZeneca, Pfizer - Biontech, Johnson&Johnson, Sputnik V coronavirus disease (COVID-19) vaccine" are seen in this illustration picture taken May 2, 2021. REUTERS/Dado Ruvic/Illustration

A waiter arranges beer bottles labeled with the face of the Madrid Regional government leader Isabel Diaz Ayuso in a bar in Madrid, Spain, April 28, 2021. REUTERS/Sergio Perez

A waiter arranges beer bottles labeled with the face of the Madrid Regional government leader Isabel Diaz Ayuso in a bar in Madrid, Spain, April 28, 2021. REUTERS/Sergio Perez

A syringe and a vial labelled "coronavirus disease (COVID-19) vaccine" are placed on a passport in this illustration taken April 27, 2021. REUTERS/Dado Ruvic/Illustration

A syringe and a vial labelled "coronavirus disease (COVID-19) vaccine" are placed on a passport in this illustration taken April 27, 2021. REUTERS/Dado Ruvic/Illustration

A syringe and a vial labelled "coronavirus disease (COVID-19) vaccine" are placed on a passport with printed words "COVID-19 vaccinated" in this illustration taken April 27, 2021. REUTERS/Dado Ruvic/Illustration

A syringe and a vial labelled "coronavirus disease (COVID-19) vaccine" are placed on a passport in this illustration taken April 27, 2021. REUTERS/Dado Ruvic/Illustration

Pfizer CEO Albert Bourla sticks an EU flag label during a visit at the factory of U.S. pharmaceutical company Pfizer in Puurs, Belgium April 23, 2021. John Thys /Pool via REUTERS

European Commission President Ursula von der Leyen sticks an EU flag label during a visit at the factory of U.S. pharmaceutical company Pfizer in Puurs, Belgium April 23, 2021. John Thys /Pool via REUTERS

European Commission President Ursula von der Leyen sticks an EU flag label during a visit at the factory of U.S. pharmaceutical company Pfizer in Puurs, Belgium April 23, 2021. John Thys /Pool via REUTERS

A vial labelled "Moderna COVID-19 vaccine" is seen as doctor Pina Tomaselli administers a vaccine at a care home in Naples, Italy, March 30, 2021. REUTERS/Ciro De Luca

Vial labelled "Sputnik V coronavirus disease (COVID-19) vaccine" placed on displayed Sputnik V logo is seen in this illustration picture taken March 24, 2021. REUTERS/Dado Ruvic/Illustration

Vial labelled "Moderna coronavirus disease (COVID-19) vaccine" placed on displayed Moderna logo is seen in this illustration picture taken March 24, 2021. REUTERS/Dado Ruvic/Illustration

Vial labelled "Moderna coronavirus disease (COVID-19) vaccine" placed on displayed Moderna logo is seen in this illustration picture taken March 24, 2021. REUTERS/Dado Ruvic/Illustration

Vial labelled "AstraZeneca coronavirus disease (COVID-19) vaccine" placed on displayed EU flag is seen in this illustration picture taken March 24, 2021. REUTERS/Dado Ruvic/Illustration

Vials labelled "Sinopharm coronavirus disease (COVID-19) vaccine" placed on displayed EU flag are seen in this illustration picture taken March 24, 2021. REUTERS/Dado Ruvic/Illustration

Vials labelled "Pfizer BioNtech coronavirus disease (COVID-19) vaccine" placed on displayed EU flag are seen in this illustration picture taken March 24, 2021. REUTERS/Dado Ruvic/Illustration

Vials labelled "AstraZeneca coronavirus disease (COVID-19) vaccine" placed on displayed EU flag are seen in this illustration picture taken March 24, 2021. REUTERS/Dado Ruvic/Illustration

Vials labelled "Sputnik V coronavirus disease (COVID-19) vaccine" placed on displayed EU flag are seen in this illustration picture taken March 24, 2021. REUTERS/Dado Ruvic/Illustration

Vial labelled "AstraZeneca coronavirus disease (COVID-19) vaccine" placed on displayed AstraZeneca logo is seen in this illustration picture taken March 24, 2021. REUTERS/Dado Ruvic/Illustration

Vial labelled "Moderna coronavirus disease (COVID-19) vaccine" placed on displayed EU flag is seen in this illustration picture taken March 24, 2021. REUTERS/Dado Ruvic/Illustration

Vial labelled "AstraZeneca coronavirus disease (COVID-19) vaccine" placed on displayed EU flag is seen in this illustration picture taken March 24, 2021. REUTERS/Dado Ruvic/Illustration

Vial labelled "Pfizer BioNtech coronavirus disease (COVID-19) vaccine" placed on a displayed EU flag is seen in this illustration picture taken March 24, 2021. REUTERS/Dado Ruvic/Illustration

A view of the shipping label as FedEx employees unload a shipment from Europe of the Moderna vaccine against the coronavirus disease (COVID-19) at Toronto Pearson Airport in Mississauga, Ontario, Canada March 24, 2021. REUTERS/Carlos Osorio

People gather around as members of AnimaNaturalis protest in packaging labelled "carne humana" (human meat) to commemorate MeatOut Day in Barcelona, Spain March 20, 2021. REUTERS/Nacho Doce

People gather around as members of AnimaNaturalis protest in packaging labelled "carne humana" (human meat) to commemorate MeatOut Day in Barcelona, Spain March 20, 2021. REUTERS/Nacho Doce

Members of AnimaNaturalis protest in packaging labelled "carne humana" (human meat) to commemorate MeatOut Day in Barcelona, Spain March 20, 2021. REUTERS/Nacho Doce

Members of AnimaNaturalis protest in packaging labelled "carne humana" (human meat) to commemorate MeatOut Day in Barcelona, Spain March 20, 2021. REUTERS/Nacho Doce TPX IMAGES OF THE DAY

Members of AnimaNaturalis protest in packaging labelled "carne humana" (human meat) to commemorate MeatOut Day in Barcelona, Spain March 20, 2021. REUTERS/Nacho Doce

Members of AnimaNaturalis protest in packaging labelled "carne humana" (human meat) to commemorate MeatOut Day in Barcelona, Spain March 20, 2021. REUTERS/Nacho Doce

Members of AnimaNaturalis protest in packaging labelled "carne humana" (human meat) to commemorate MeatOut Day in Barcelona, Spain March 20, 2021. REUTERS/Nacho Doce

Members of AnimaNaturalis protest in packaging labelled "carne humana" (human meat) to commemorate MeatOut Day in Barcelona, Spain March 20, 2021. REUTERS/Nacho Doce

Members of AnimaNaturalis protest in packaging labelled "carne humana" (human meat) to commemorate MeatOut Day in Barcelona, Spain March 20, 2021. REUTERS/Nacho Doce

Members of AnimaNaturalis protest in packaging labelled "carne humana" (human meat) to commemorate MeatOut Day in Barcelona, Spain March 20, 2021. REUTERS/Nacho Doce

Vials with Pfizer-BioNTech, AstraZeneca, Sputnik V, and Moderna coronavirus disease (COVID-19) vaccine labels are seen in this illustration picture taken March 19, 2021. REUTERS/Dado Ruvic/Illustration

Vials with Pfizer-BioNTech and AstraZeneca coronavirus disease (COVID-19) vaccine labels are seen in this illustration picture taken March 19, 2021. REUTERS/Dado Ruvic/Illustration

Vials with Pfizer-BioNTech and Sputnik V coronavirus disease (COVID-19) vaccine labels are seen in this illustration picture taken March 19, 2021. REUTERS/Dado Ruvic/Illustration

Vials with Pfizer-BioNTech, AstraZeneca, Sputnik V, and Moderna coronavirus disease (COVID-19) vaccine labels are seen in this illustration picture taken March 19, 2021. REUTERS/Dado Ruvic/Illustration