(To watch the full press conference with sign language interpretation, click here.)

The Government will include any building that records one COVID-19 case with an unknown infection source into the compulsory testing notice starting today.

Making the announcement at a press conference this afternoon, Chief Secretary Matthew Cheung said compulsory testing would also be extended to any building with sewage samples positive for the virus.

Mr Cheung also noted the Government will initiate more compulsory testing operations in specified restricted areas in the next 10 days.

"We will intensify our operations, the so-called lockdown, targeted operations every day until February 10, which is the day before the Lunar New Year's Eve.

"That will provide an environment for these scheduled premises that are now closed to gradually start operation again.

"This point is very important, at least we give a timeline for the community. Let's work together and fight the disease intensively."