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

The Centre for Health Protection today said it is investigating 100 additional COVID-19 cases, of which 95 are locally transmitted.

Among the local cases, 68 are linked with previous ones while 27 have an unknown source of infection.

Five more cases were detected at Block 8 of Kwai Shing West Estate, taking the total number of cases at that block to 18.

At a press briefing this afternoon, the centre's Communicable Disease Branch Head Dr Chuang Shuk-kwan said the five patients live on 5/F, 7/F and 8/F of Block 8.

"Initially we only recorded one or two units that were affected. Their family members were also affected. So when we realised that there were more than two units ie three units, we started to investigate whether the three households knew each other because they were on the same floor.

"We noted that there were two more units affected. So we started to get worried about whether there were other units affected. That is why we immediately distributed specimen bottles to ascertain the situation. Then we found there were more units affected and that is why we put all the residents of the fifth floor under quarantine."

Dr Chuang added that 2,300 specimen samples from Block 8 residents have been tested and 98 residents of the fifth floor have been sent to a quarantine centre so far.

Other confirmed cases involve nine related to the quarantine facility at AsiaWorld-Expo, 13 to the dance club cluster and two to the LOHAS Park construction site in Tseung Kwan O.

The centre also reported that three staff members of its home quarantine taskforce were confirmed infected with the virus, while another tested preliminary positive.

The preliminary positive case is a Senior Ambulanceman who works part-time in the taskforce. He had transported a close contact of a COVID-19 patient while performing his duties as an ambulanceman on November 23.

For information and health advice on COVID-19, visit the Government's dedicated webpage.