Police officers wear protective gear inside a locked down portion of the Jordan residential area to contain a new outbreak of the coronavirus disease (COVID-19), in Hong Kong, China January 23, 2021. Hong Kong's government locked down an area in the Kowloon district on Saturday, saying people there must stay home until all residents have been tested for the new coronavirus and results largely determined. REUTERS/Tyrone Siu

Health workers wear protective gear inside a locked down portion of the Jordan residential area to contain a new outbreak of the coronavirus disease (COVID-19), in Hong Kong, China January 23, 2021. The government said in a statement there are 70 buildings in the "restricted area" of Jordan and that it aims to finish the process within about 48 hours. REUTERS/Tyrone Siu

Medical workers in protective suits help residents to register outside at a residential area at Jordan where tens of thousands of its residents will be placed in a lockdown to contain a new outbreak of the coronavirus disease (COVID-19), in Hong Kong, China January 22, 2021. REUTERS/Tyrone Siu

Health workers are seen wear protective gear after the government announced locking down a portion of the Jordan residential area to contain a new outbreak of the coronavirus disease (COVID-19), in Hong Kong, China January 23, 2021. REUTERS/Tyrone Siu

A medical worker in a protective suit helps residents to register outside at a residential area at Jordan where tens of thousands of its residents will be placed in a lockdown to contain a new outbreak of the coronavirus disease (COVID-19), in Hong Kong, China January 22, 2021. REUTERS/Tyrone Siu

Health workers wear protective gear inside a locked down portion of the Jordan residential area to contain a new outbreak of the coronavirus disease (COVID-19), in Hong Kong, China January 23, 2021. REUTERS/Tyrone Siu