Residents wearing face masks to help protect from the coronavirus gather in line as they wait for a throat swab at a COVID-19 test site outside a residential housing block in Fengtai District in Beijing, Wednesday, Jan. 26, 2022. The Chinese capital reported an uptick more than dozen daily new COVID-19 cases as it began a third round of mass testing of millions of people Wednesday in the run-up to the Winter Olympics. (AP Photo/Andy Wong)

A man looks at a woman gets a throat swab at a COVID-19 test site outside a residential housing block in Fengtai District in Beijing, Wednesday, Jan. 26, 2022. The Chinese capital reported an uptick to more than dozen new COVID-19 cases as it began a third round of mass testing of millions of people Wednesday in the run-up to the Winter Olympics. (AP Photo/Andy Wong)

Residents wearing face masks to help protect from the coronavirus line up to get a throat swab at a COVID-19 test site outside a residential housing block in Fengtai District in Beijing, Wednesday, Jan. 26, 2022. The Chinese capital reported an uptick more than dozen daily new COVID-19 cases as it began a third round of mass testing of millions of people Wednesday in the run-up to the Winter Olympics. (AP Photo/Andy Wong)

People wearing face masks to help protect from the coronavirus line up for testing outside a COVID-19 test site in Dongcheng District in Beijing, early Wednesday, Jan. 26, 2022. The Chinese capital reported an uptick more than dozen daily new COVID-19 cases as it began a third round of mass testing of millions of people Wednesday in the run-up to the Winter Olympics. (AP Photo/Andy Wong)

A medical worker wearing protective gear collects a sample from a resident at a COVID-19 test site outside a residential housing block in Fengtai District in Beijing, Wednesday, Jan. 26, 2022. The Chinese capital reported an uptick more than dozen daily new COVID-19 cases as it began a third round of mass testing of millions of people Wednesday in the run-up to the Winter Olympics. (AP Photo/Andy Wong)

Residents line up to get a throat swab at a coronavirus test site outside a residential housing block in the Fengtai District of Beijing, Wednesday, Jan. 26, 2022. The Chinese capital reported an uptick more than dozen daily new COVID-19 cases as it began a third round of mass testing of millions of people Wednesday in the run-up to the Winter Olympics. (AP Photo/Andy Wong)

A man wearing a face mask to help protect from the coronavirus walks a dog past masked residents lining up to get a throat swab at a coronavirus test site outside a residential housing block in Fengtai District in Beijing, Wednesday, Jan. 26, 2022. The Chinese capital reported an uptick more than dozen daily new COVID-19 cases as it began a third round of mass testing of millions of people Wednesday in the run-up to the Winter Olympics. (AP Photo/Andy Wong)

A man wearing a face mask to help protect from the coronavirus walks by residents gathered for a line for a throat swab at a COVID-19 test site outside a residential housing block in Fengtai District in Beijing, Wednesday, Jan. 26, 2022. The Chinese capital reported an uptick more than dozen daily new COVID-19 cases as it began a third round of mass testing of millions of people Wednesday in the run-up to the Winter Olympics. (AP Photo/Andy Wong)

A medical worker wearing protective gear prepares swabs at a coronavirus test site outside a residential housing block in Fengtai District in Beijing, Wednesday, Jan. 26, 2022. The Chinese capital reported an uptick more than dozen daily new COVID-19 cases as it began a third round of mass testing of millions of people Wednesday in the run-up to the Winter Olympics. (AP Photo/Andy Wong)

Residents wearing face masks to help protect from the coronavirus line up to get a throat swab at a COVID-19 test site outside a residential housing block in Fengtai District in Beijing, Wednesday, Jan. 26, 2022. The Chinese capital reported an uptick more than dozen daily new COVID-19 cases as it began a third round of mass testing of millions of people Wednesday in the run-up to the Winter Olympics. (AP Photo/Andy Wong)

A woman uses her smartphone to scan the health code as residents wearing face masks to help protect from the coronavirus line up outside a COVID-19 test site early morning in Dongcheng District in Beijing, Wednesday, Jan. 26, 2022. The Chinese capital reported an uptick to more than a dozen daily new COVID-19 cases as it began a third round of mass testing of millions of people Wednesday in the run-up to the Winter Olympics. (AP Photo/Andy Wong)

A volunteer in protective gear walks by masked residents lining up to get tested at a coronavirus test site outside a residential housing block in Fengtai District in Beijing, Wednesday, Jan. 26, 2022. The Chinese capital reported an uptick more than dozen daily new COVID-19 cases as it began a third round of mass testing of millions of people Wednesday in the run-up to the Winter Olympics. (AP Photo/Andy Wong)