Macau authorities on Sunday ordered all residents to undergo three consecutive days of rapid antigen tests, after the gaming hub reported three new Covid infections involving the same family.

Officials said that in order to prevent social transmission, all Macau residents must upload their test results daily onto the Macau healthcode system.

Failure to do so would result in their health codes turning yellow, essentially barring them from public transport and venues such as restaurants.

The latest infections involved the family of a 43-year-old woman who works at MGM Cotai. She was confirmed with the coronavirus on Sunday morning.

Authorities said she was in Zhuhai last Tuesday and had been to a courier service centre inside a shopping mall at around the same time as another confirmed case.

Her two teenage sons were subsequently found to be infected as well.