The Centre for Health Protection today said it is investigating four additional COVID-19 cases, of which two are imported, one is a local case with an unknown source and the remaining case is epidemiologically linked with the local case.

The local case with an unknown infection source involves the N501Y mutant strain. The patient is a 39-year-old foreign domestic helper.

She developed a cough on April 23 and attended a private medical practitioner on April 26. She underwent testing at a community testing centre the following day and tested positive.

The linked case involves a 10-month-old girl who lives with the domestic helper.

The imported cases are from India and Nepal.

A total of 152 cases have been recorded in the past 14 days, including 33 local cases of which 15 are from unknown sources.

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