Product testing

Turkey's President Recep Tayyip Erdogan addresses ambassadors of EU nation, in Ankara, Turkey, Tuesday, Jan. 12, 2021. Erdogan said Tuesday his country is ready to put its frayed relationship with the European Union "back on track" and called on the 27-nation bloc to display the same determination. (Turkish Presidency via AP, Pool)

A health worker gives an injection to a mock patient during a coronavirus vaccine drill in Bali, Indonesia on Monday, Jan. 11, 2021. Indonesia's highest Islamic body has gave its religious approval to China's Sinovac vaccine, paving the way for its distribution in the world's most populous Muslim nation. (AP Photo/Firdia Lisnawati)

FILE - In this Friday, Jan. 8, 2021, file photo, a health worker checks a syringe before performing a trial run of COVID-19 vaccine delivery system, as India's prepare to kick off the coronavirus vaccination drive on Jan. 16, in Gauhati, India. There has been growing apprehensions among health care workers after India took a regulatory shortcut to approve a vaccine by Indian drugmaker Bharat Biotech before late clinical trials showed it was effective in preventing illness from coronavirus infections. (AP Photo/Anupam Nath, File)

FILE - In this Jan. 2, 2021, file photo, a person completes a swab of their mouth at a Curative walk-up kiosk testing site for COVID-19 at the Garfield Community Center in Seattle. The U.S. Food and Drug Administration is warning patients and health care providers that a coronavirus test developed by California company Curative may produce false results. (AP Photo/Ted S. Warren, File)

Volunteers wearing face masks as a precaution against the coronavirus clear the debris left over by tourists at Maidan, the city's largest open space in Kolkata, India, Sunday, Jan. 3, 2021. India authorized two COVID-19 vaccines on Sunday, paving the way for a huge inoculation program to stem the coronavirus pandemic in the world’s second most populous country. (AP Photo/Bikas Das)

FILE - In this March 19, 2020, file photo Gov. Doug Ducey, left, hands a bag of food to a student outside Sunset Elementary School in Phoenix. Citing the state's surge of COVID-19 cases, Arizona's top education official on Saturday, Jan. 2, 2021, called for Ducey to order that public schools use only distance learning for the next two weeks without waivers from health officials. (AP Photo/Matt York, File)

This photo provided by Johns Hopkins Center for American Indian Health shows a brochure that was used to provide information about a COVID-19 vaccine trial on the Navajo Nation, Tuesday, Dec. 29, 2020, in Chinle, Ariz. (Nina Mayer Ritchie/Johns Hopkins Center for American Indian Health via AP)

In this Tuesday, Dec. 29, 2020, photo provided by Johns Hopkins Center for American Indian Health, registered nurse Starla Garcia prepares a coronavirus vaccine in Chinle, Ariz., for someone who enrolled in the COVID-19 vaccine trials on the Navajo Nation and initially received a placebo. (Nina Mayer Ritchie/Johns Hopkins Center for American Indian Health via AP)

Health workers participate in a COVID-19 vaccine delivery system trial in Hyderabad, India, Saturday, Jan. 2, 2021. India tested its COVID-19 vaccine delivery system with a nationwide trial on Saturday as it prepares to roll-out an inoculation program to stem the coronavirus pandemic. Saturday's exercise included necessary data entry into an online platform for monitoring vaccine delivery, along with testing of cold storage and transportation arrangements for the vaccine, the health ministry had said.(AP Photo/Mahesh Kumar A.)

FILE - In this March 16, 2020 file photo, a pharmacist gives Jennifer Haller, left, the first shot in the first-stage safety study clinical trial of a potential vaccine for COVID-19, the disease caused by the new coronavirus, at the Kaiser Permanente Washington Health Research Institute in Seattle. Tens of thousands of Americans have volunteered to test COVID-19 vaccines, but only about half of them got the real thing. Now, with the first vaccine rollouts and a surge in coronavirus infections, experts are debating what to do about the half that got a dummy shot. (AP Photo/Ted S. Warren, File)