Macau casino operators are facing fresh challenges after the local government imposed new visitor entry limits to minimize further spread of the COVID-19 coronavirus.

On Tuesday, Macau’s government announced that it would bar entry to all non-residents who’d visited foreign countries in the previous 14 days. Similar restrictions were imposed on international arrivals last week, but mainland China, Hong Kong and Taiwan had been exempted from those rules.

Macau has been forced to act after confirming a handful of new COVID-19 cases brought into the special administrative region of China by individuals who’d contacted the virus outside Macau. Hong Kong announced similar restrictions on foreign arrivals – including those from Macau – that will also take effect Wednesday.

As of Wednesday, returning Macau residents, as well as residents of mainland China, Hong Kong or Taiwan who haven’t traveled abroad in the past two weeks, will need to spend 14 days in quarantine upon their arrival in Macau. Mainland residents who haven’t traveled abroad or visited either Hong Kong or Taiwan will need to undergo medical scrutiny at a government-run facility.