Maggie Sedidi, left, a 59-year-old nurse at Soweto's Chris Hani Baragwanath hospital, reads a medical questioner before receiving her dose of the Johnson & Johnson COVID-19 vaccine at a vaccination center in Soweto, South Africa, Friday, March 5, 2021. Sedidi is optimistic: "By next year, or maybe the year after, I really do hope that people will be able to begin returning to normal life." (AP Photo/Themba Hadebe)

FILE - In this Sept. 4, 2020, file photo, Francisco Espana, 60, is surrounded by members of his medical team as he looks at the Mediterranean sea from a promenade next to the "Hospital del Mar" in Barcelona, Spain. Francisco spent 52 days in the Intensive Care unit at the hospital due to coronavirus, but today he was allowed by his doctors to spend almost ten minutes at the seaside as part of his recovery therapy. (AP Photo/Emilio Morenatti, File)

FILE - In this March 12, 2020, file photo, passengers rest at the Barcelona airport, Spain. President Donald Trump, who had downplayed the coronavirus for weeks, suddenly struck a different tone, announcing strict rules on restricting travel from much of Europe to begin this weekend. (AP Photo/Emilio Morenatti, File)

Sangu Kande, left, a nurse at Queen Anne Healthcare, a skilled nursing and rehabilitation facility in Seattle, poses for a photo, Friday, March 5, 2021, with Jean Allen, 96, one of the patients Kande cared for during the past year. Allen was infected and recovered from coronavirus. But 19 of her fellow residents and two beloved staff members died. The deaths trailed off, but the isolation and boredom continue. (AP Photo/Ted S. Warren)

Pasang Rinzee Sherpa, 33, mountain guide poses for a photograph in Kathmandu, Nepal, Wednesday, March 3, 2021. Sherpa has scaled Mount Everest twice and spent 18 years helping climbers up the highest Himalayan peaks, generally earning about $8,000 a year. In the past 12 months, he had no income. (AP Photo/Niranjan Shrestha)

Maggie Sedidi, a 59-year-old nurse at Soweto's Chris Hani Baragwanath hospital, poses for a photo taken by a colleague after receiving her dose of the Johnson & Johnson COVID-19 vaccine from a health staff member at a vaccination center in Soweto, South Africa, Friday, March 5, 2021. Sedidi is optimistic: "By next year, or maybe the year after, I really do hope that people will be able to begin returning to normal life." (AP Photo/Themba Hadebe)

Latoria Glenn-Carr poses for a photo in Westland, Mich.,Tuesday, March 9, 2021. Glenn-Carr and her wife of six years, Tyeisha, were diagnosed with coronavirus at a hospital emergency room near their home on Oct. 29. Despite Latoria's qualms, they were sent home. Tyeisha, 43, died in bed next to her wife three days later. One month later, COVID killed Glenn-Carr's mother, too. (AP Photo/Paul Sancya)

Darelyn Maldonado, 12, right, sits on the couch with her dog, Lisa, stepfather, Steven Depina, left, and 16-month-old brother, Elijah, at their home in Pawtucket, R.I., Wednesday, March 3, 2021. Maldonado, a seventh grade student, has been out of in person school for a year since the pandemic began. She feels like she's lost friends over the past year, has missed out on playing softball which she loves and just wants her life to go back to normal. (AP Photo/David Goldman)

Maggie Sedidi, a 59-year-old nurse at Soweto's Chris Hani Baragwanath hospital, receives the Johnson & Johnson COVID-19 vaccine from a health staff member at a vaccination center in Soweto, South Africa, Friday, March 5, 2021. Sedidi is optimistic: "By next year, or maybe the year after, I really do hope that people will be able to begin returning to normal life." (AP Photo/Themba Hadebe)

Darelyn Maldonado, 12, sits on the couch with her dog, Lisa, at her home in Pawtucket, R.I., Wednesday, March 3, 2021. Maldonado, a seventh grade student, has been out of in person school for a year since the pandemic began. She feels like she's lost friends over the past year, has missed out on playing softball which she loves and just wants her life to go back to normal. (AP Photo/David Goldman)

FILE - In this Jan. 8, 2021, file photo, Jean Allen, 96, left, receives the first shot of the Pfizer vaccination for COVID-19, from a Walgreens Pharmacist, right, at Queen Anne Healthcare, a skilled nursing and rehabilitation facility in Seattle. Allen survived catching COVID-19 before she was vaccinated, during a 2020 outbreak of COVID-19 that killed more than a dozen residents and two staff members. (AP Photo/Ted S. Warren, File)

FILE - In this March 11, 2020, file photo, President Donald Trump addresses the nation from the Oval Office about the coronavirus outbreak at the White House in Washington. (AP Photo/Manuel Balce Ceneta, File)

FILE - In this March 11, 2020, file photo, a man and a girl on a scooter are backdropped by a Lombardy region campaign advertising reading in Italian ' Coronavirus let's stop it together ', at the Porta Nuova business district in Milan. Italy closed shops and restaurants after locking down in the face of 10,000 reported infections. (AP Photo/Luca Bruno, File)

Darelyn Maldonado, 12, poses for a portrait at her home in Pawtucket, R.I., Wednesday, March 3, 2021. Maldonado, a seventh grade student, has been out of in person school for a year since the pandemic began. Her mother, who also has a one-year-old son, got a job recently working at a liquor store but had to leave it because she said it was all too much. She also didn't feel safe being around so many customers. Maldonado feels like she's lost friends over the past year and just wants her life to go back to normal. (AP Photo/David Goldman)