Security personnel stand guard behind a barricade on a street under lockdown Tuesday in the Yau Ma Tei neighborhood of Hong Kong.

Medical workers in protective gear patrol a street that was locked down after dozens of new Covid-19 cases emerged over the past two weeks.

A resident takes a nucleic acid test for Covid-19 at a mobile testing center.

Residents line up to collect daily necessities that the government has provided because no one can leave the area.

Residents line up to take nucleic acid tests.

Residents wait to be tested. On Tuesday, Hong Kong reported 64 new confirmed cases of Covid-19, bringing its total number to 10,223.