Odessa College nursing student Moon Suk Kim prepares doses of the Pfizer COVID-19 vaccine for use in a vaccination clinic hosted by Odessa College Thursday, June 3, 2021 in Odessa, Texas. (Eli Hartman/Odessa American via AP)

FILE - In this Tuesday, April 14, 2020 file photo, South African Health Minister, Zweli Mkhize, takes delivery of emergency medical equipment for COVID-19 from China, at OR Tambo Airport in Johannesburg, South Africa. Mkhize was placed on special leave Tuesday, June 8, 2021 over a corruption scandal involving an irregular government contract where $11 million was paid to a company connected to two people who used to work for him. (AP Photo/Themba Hadebe, File)

FILE - In this Thursday, June 3, 2021, file photo, an elderly patient receives a dose of the Pfizer COVID-19 vaccine at a clinic at Orange Farm, near Johannesburg. Mastercard Foundation, one of the largest foundations in the world, announced Tuesday, June 8, 2021, it will spend $1.3 billion over the next three years to acquire and deliver COVID-19 vaccines for more than 50 million people in Africa. (AP Photo/Denis Farrell, File)

A woman waits for her turn to receive a shot of the AstraZeneca vaccine during a mass coronavirus vaccination held in a park in Jakarta, Indonesia, Tuesday, June 8, 2021. The world's fourth-most populous country, with about 275 million people, has reported more coronavirus cases than any other Southeast Asian country.(AP Photo/Dita Alangkara)

People walk near the Olympic Rings Wednesday, June 2, 2021, in Tokyo. Roads are being closed off around Tokyo Olympic venues including the new $1.4 billion National Stadium where the opening ceremony is set for July 23. (AP Photo/Eugene Hoshiko)

An Indian villager and a child wearing masks on their chin ride on a bicycle on the outskirts of Gauhati, India, Monday, June 7, 2021. (AP Photo/Anupam Nath)

FILE - In this Monday, Jan. 4, 2021 file photo, frozen vials of the Pfizer/BioNTech COVID-19 vaccine are taken out to thaw, at the MontLegia CHC hospital in Liege, Belgium. Envoys from World Trade Organization member nations are taking up a proposal to ease patents and other intellectual property protections for COVID-19 vaccines to help developing countries fight the pandemic, an idea backed by the Biden administration but opposed in other wealthy countries with strong pharmaceutical industries. On the table for a two-day meeting of a WTO panel opening Tuesday June 8, 2021, is a revised proposal presented by India and South Africa for a temporary IP waiver on coronavirus vaccines. (AP Photo/Francisco Seco, File)

A supporter covers her face with a mask for protection with a sticker that reads "Sahara Free" while taking part in a rally between Los Arcos and Logrono in support of the Polisario Front and a free Sahara, in northern Spain, Tuesday, June 8, 2021. Polisario Front is an Algeria-backed pro-independence movement representing the local Sahrawi people of Africa's mineral-rich Western Sahara, and of the self-declared Sahrawi Arab Democratic Republic. (AP Photo/Alvaro Barrientos)

A Nepalese woman sits after getting inoculated against the coronavirus in Kathmandu, Nepal, Tuesday, June 8, 2021. Nepal resumed its stalled coronavirus vaccination campaign on Tuesday with 1 million doses given by China after the Himalayan nation made international pleas for help with a shortage of doses. (AP Photos/Bikram Rai)

Inside a Neoness gym, a day prior the nationwide reopening of indoor sports clubs, in Paris, France, Tuesday, June 8, 2021. (AP Photo/Lewis Joly)

A woman receives a shot of the AstraZeneca vaccine during a mass coronavirus vaccination held at a children's library at a park in Jakarta, Indonesia, Tuesday, June 8, 2021. The world's fourth-most populous country, with about 275 million people, has reported more coronavirus cases than any other Southeast Asian country. (AP Photo/Dita Alangkara)

A woman receives a shot of the AstraZeneca vaccine during a mass coronavirus vaccination held at a children's library in Jakarta, Indonesia, Tuesday, June 8, 2021. The world's fourth-most populous country, with about 275 million people, has reported more coronavirus cases than any other Southeast Asian country. (AP Photo/Dita Alangkara)