The 74th Cannes Film Festival - Closing ceremony and screening of the film "OSS 117: Alerte Rouge en Afrique Noire" (OSS 117: From Africa with Love) out of competition - Red Carpet Arrivals - Cannes, France, July 17, 2021. Kad Merad and Julia Vignali pose with actors and directors of Cannes 2020 label. REUTERS/Reinhard Krause

The 74th Cannes Film Festival - Closing ceremony and screening of the film "OSS 117: Alerte Rouge en Afrique Noire" (OSS 117: From Africa with Love) out of competition - Red Carpet Arrivals - Cannes, France, July 17, 2021. Kad Merad and Julia Vignali pose with actors and directors of Cannes 2020 label. REUTERS/Sarah Meyssonnier

French champagne producer Charline Drappier poses with a bottle during an interview with Reuters in Urville, France, July 8, 2021, after Russia adopted new law requiring French producers to label their product as "sparkling wine." Picture taken July 8, 2021. REUTERS/Clotaire Achi

French champagne producer Michel Drappier poses in his vineyard in Urville, France, July 8, 2021, after Russia adopted new law requiring French producers to label their product as "sparkling wine." Picture taken July 8, 2021. REUTERS/Clotaire Achi

French champagne producer Michel Drappier poses during an interview with Reuters in Urville, France, July 8, 2021, after Russia adopted new law requiring French producers to label their product as "sparkling wine." Picture taken July 8, 2021. REUTERS/Clotaire Achi

UPDATE clarifies axis label An Oxford University study found that a second dose of the Oxford-AstraZeneca COVID-19 vaccine can be delayed and lead to an enhanced immune response.

Syringe and vial labelled "coronavirus disease (COVID-19) vaccine" and small toy figures are seen front of displayed new Pfizer logo in this illustration taken, June 24, 2021. REUTERS/Dado Ruvic/Illustration

Antique medical laboratory labels are seen at Stephenson's pharmacy, founded in 1915 by English pharmacist George Stephenson, as its manager Zoheir Ehsan gives a tour, in downtown Cairo, Egypt May 31, 2021. Picture taken May 31, 2021. REUTERS/Amr Abdallah Dalsh

Old medicine bottles with dangerous poison labels are seen at Stephenson's pharmacy, founded in 1915 by English pharmacist George Stephenson, as its manager Zoheir Ehsan gives a tour, in downtown Cairo, Egypt May 31, 2021. Picture taken May 31, 2021. REUTERS/Amr Abdallah Dalsh

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