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FILE - Cemetery workers in protective gear bury a person alongside rows of freshly dug graves at the Vila Formosa cemetery in Sao Paulo, Brazil, April 1, 2020. (AP Photo/Andre Penner, File)

FILE - Cemetery workers in protective gear bury a person alongside rows of freshly dug graves at the Vila Formosa cemetery in Sao Paulo, Brazil, April 1, 2020. (AP Photo/Andre Penner, File)

FILE - A medical worker takes a swab sample from a worker of the China Star Optoelectronics Technology (CSOT) company during a round of COVID-19 tests in Wuhan in central China's Hubei province, Aug. 5, 2021. (Chinatopix via AP, File)

FILE - A medical worker takes a swab sample from a worker of the China Star Optoelectronics Technology (CSOT) company during a round of COVID-19 tests in Wuhan in central China's Hubei province, Aug. 5, 2021. (Chinatopix via AP, File)

FILE - Dr. Sydney Sewall fills a syringe with the COVID-19 vaccine at the Augusta Armory, Dec. 21, 2021, in Augusta, Maine. (AP Photo/Robert F. Bukaty, File)

FILE - Dr. Sydney Sewall fills a syringe with the COVID-19 vaccine at the Augusta Armory, Dec. 21, 2021, in Augusta, Maine. (AP Photo/Robert F. Bukaty, File)

FILE - This undated electron microscope image made available by the U.S. National Institutes of Health in February 2020 shows the Novel Coronavirus SARS-CoV-2, yellow, emerging from the surface of cells, pink, cultured in the lab. Also known as 2019-nCoV, the virus causes COVID-19. The sample was isolated from a patient in the U.S. (NIAID-RML via AP, File)

FILE - This undated electron microscope image made available by the U.S. National Institutes of Health in February 2020 shows the Novel Coronavirus SARS-CoV-2, yellow, emerging from the surface of cells, pink, cultured in the lab. Also known as 2019-nCoV, the virus causes COVID-19. The sample was isolated from a patient in the U.S. (NIAID-RML via AP, File)

FILE - Denmark's Jonas Vingegaard, left, and teammate Matteo Jorgenson, of the U.S., wear face masks to protect themselves from the Corona virus prior to the start of the fourteenth stage of the Tour de France cycling race over 151.9 kilometers (94.4 miles) with start in Pau and finish in Saint-Lary-Soulan Pla d'Adet, France, July 13, 2024. Several riders had to abandon the race after contracting COVID-19. (AP Photo/Daniel Cole, File)

FILE - Denmark's Jonas Vingegaard, left, and teammate Matteo Jorgenson, of the U.S., wear face masks to protect themselves from the Corona virus prior to the start of the fourteenth stage of the Tour de France cycling race over 151.9 kilometers (94.4 miles) with start in Pau and finish in Saint-Lary-Soulan Pla d'Adet, France, July 13, 2024. Several riders had to abandon the race after contracting COVID-19. (AP Photo/Daniel Cole, File)

FILE - Nancy Rose, who contracted COVID-19 in 2021 and exhibits long-haul symptoms including brain fog and memory difficulties, pauses while organizing her desk space, Jan. 25, 2022, in Port Jefferson, N.Y. (AP Photo/John Minchillo, File)

FILE - Nancy Rose, who contracted COVID-19 in 2021 and exhibits long-haul symptoms including brain fog and memory difficulties, pauses while organizing her desk space, Jan. 25, 2022, in Port Jefferson, N.Y. (AP Photo/John Minchillo, File)

FILE - People attend an exhibition on the city's fight against the coronavirus in Wuhan in central China's Hubei province, Jan. 23, 2021. (AP Photo/Ng Han Guan, File)

FILE - People attend an exhibition on the city's fight against the coronavirus in Wuhan in central China's Hubei province, Jan. 23, 2021. (AP Photo/Ng Han Guan, File)