Product testing

Employees of the Lavakar car wash pose for a group portrait in Mexico City, Friday, July 31, 2020. The workers said the shop was closed for three months during the COVID-19 related lockdown, and now after reopening only wash about 10 cars a day, compared to 30 before the lockdown. (AP Photo/Marco Ugarte)

FILE - In this June 16, 2020, file photo, French President Emmanuel Macron listens to a researcher as he visits an industrial development laboratory at French drugmaker's vaccine unit Sanofi Pasteur plant in Marcy-l'Etoile, near Lyon, central France. As the race for a vaccine against the new coronavirus intensifies, many rich countries are rushing to the front of the line by placing advance orders for the inevitably limited supply to guarantee their citizens are immunized first. (AP Photo/Laurent Cipriani, Pool)

Professor Robin Shattock the Head of Mucosal Infection and Immunity within the Department of Medicine at Imperial College in London, Thursday, July 30, 2020. Scientists at Imperial College London say they are immunizing hundreds of people with an experimental coronavirus vaccine in an early trial after seeing no worrying safety problems in those vaccinated so far. Dr. Robin Shattock told the Associated Press that he and colleagues had just finished a very slow and arduous process of testing the vaccine at a low dose in a small number of participants and would now be expanding the trial to about 300 people, including those over 75. (AP Photo/Kirsty Wigglesworth)

President Donald Trump speaks during a coronavirus briefing at Bioprocess Innovation Center at Fujifilm Diosynth Biotechnologies, Monday, July 27, 2020, in Morrisville, N.C. (AP Photo/Evan Vucci)

FILE - This March 16, 2020 file photo shows vials used by pharmacists to prepare syringes used on the first day of a first-stage safety study clinical trial of the potential vaccine for COVID-19, the disease caused by the new coronavirus, at the Kaiser Permanente Washington Health Research Institute in Seattle. The world's biggest COVID-19 vaccine test got underway Monday, July 27 with the first of 30,000 planned volunteers. The experimental vaccine is made by the National Institutes of Health and Moderna Inc., and it's one of several candidates in the final stretch of the global vaccine race. (AP Photo/Ted S. Warren, File)

FILE - In this Tuesday, March 3, 2020, file photo, Hawaii Gov. David Ige speaks to reporters at the state Department of Health's laboratory in Pearl City, Hawaii. Ige said Monday, July 13, 2020, he will wait another month to waive a 14-day quarantine requirement for out-of-state travelers who test negative for COVID-19, citing increasing virus cases in Hawaii, "uncontrolled" outbreaks in several U.S. mainland states and a shortage of testing supplies. (AP Photo/Audrey McAvoy, File)

People wearing face masks to protect against the new coronavirus look at the movable penguin figures on display inside a mall in Beijing, Monday, July 20, 2020. China's latest coronavirus outbreak has spread to a second city in the northwestern region of Xinjiang. (AP Photo/Andy Wong)

In this April 11, 2020, photo released by Xinhua News Agency, a staff member tests samples of a potential COVID-19 vaccine at a production plant of SinoPharm in Beijing. In the global race to make a coronavirus vaccine, the state-owned Chinese company is boasting that it gave its employees, including top executives, experimental shots even before the government OK'd testing in people. (Zhang Yuwei/Xinhua via AP)

FILE - In this March 16, 2020, file photo, a patient receives a 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. When precious vats of COVID-19 vaccine are finally ready, the ability to jab the lifesaving solution into the arms of Americans will require hundreds of millions of injections. (AP Photo/Ted S. Warren, File)

A man walks past an informational mural with messages in English and Swahili warning people about the dangers of the new coronavirus and how to prevent transmission, painted by youth artists from the Uweza Foundation, in the Kibera slum, or informal settlement, of Nairobi, Kenya Wednesday, July 8, 2020. Africa now has more than a half-million confirmed coronavirus cases, according to the Africa Centers for Disease Control and Prevention, but the true number of cases among Africa's 1.3 billion people is unknown as its 54 countries face a serious shortage of testing materials for the virus. (AP Photo/Brian Inganga)