COVID tests and vaccination lines amid Omicron spread

A health worker prepares a test for the coronavirus disease (COVID-19), after cases of the Omicron variant were detected in Porto Alegre, Brazil, January 20, 2022. REUTERS/Diego Vara

A health worker collects a COVID-19 swab sample from a woman in Porto Alegre, Brazil, January 20, 2022. REUTERS/Diego Vara

People line up to receive a booster dose of the AstraZeneca vaccine, in Santa Catarina, Mexico January 19, 2022. REUTERS/Daniel Becerril

Judith Johanna Pawelke processes a coronavirus disease test in her interior design store, which is currently being used as a COVID-19 test station in Munich, Germany, January 19, 2022. REUTERS/Lukas Barth

A health worker collects a COVID-19 swab sample from a man in Mexico City, January 20, 2022. REUTERS/Edgard Garrido

People queue to be tested for the coronavirus disease in Mexico City, Mexico, January 20, 2022. REUTERS/Edgard Garrido

A health worker prepares a sample to test for COVID-19, in Porto Alegre, Brazil, January 20, 2022. REUTERS/Diego Vara

Luan Ribeiro Ferreira dos Santos receives a dose of Sinovac Biotech's Coronavac vaccine in Sao Paulo, Brazil, January 20, 2022. REUTERS/Carla Carniel

People queue as they register to be tested for the coronavirus disease in Mexico City, January 20, 2022. REUTERS/Edgard Garrido

A health worker prepares a sample to test for COVID-19, in Porto Alegre, Brazil, January 20, 2022. REUTERS/Diego Vara

People queue to receive a booster dose of the AstraZeneca vaccine, in Santa Catarina, Mexico January 19, 2022. REUTERS/Daniel Becerril

A health worker collects a swab sample from a man to test for the coronavirus disease in Porto Alegre, Brazil, January 20, 2022. REUTERS/Diego Vara

People wait at a rapid testing site during in Porto Alegre, Brazil, January 20, 2022. REUTERS/Diego Vara

A health worker collects a swab sample from a woman to test for the coronavirus disease in Porto Alegre, Brazil, January 20, 2022. REUTERS/Diego Vara

People walk past a COVID-19 testing sign during the pandemic in New York City, January 20, 2022. REUTERS/Carlo Allegri

Erico Amorim de Souza Nunes receives a dose of Sinovac Biotech's Coronavac vaccine in Sao Paulo, Brazil, January 20, 2022. REUTERS/Carla Carniel

People queue outside a gym set up as a Respiratory Care Module where workers of the Mexican Social Security Institute (IMSS) grant sick leaves to patients with the coronavirus disease (COVID-19) in Ciudad Juarez, Mexico, January 19, 2022....more

A man receives a booster dose of the AstraZeneca vaccine, in Santa Catarina, Mexico January 19, 2022. REUTERS/Daniel Becerril

A woman reacts as she receives a booster shot vaccine against coronavirus disease in Nairobi, Kenya, January 19, 2022. REUTERS/Monicah Mwangi

Judith Johanna Pawelke processes a coronavirus disease test in her interior design store, which is currently being used as a COVID-19 test station in Munich, Germany, January 19, 2022. REUTERS/Lukas Barth