Singapore will not allow any short-term visitors to transit or enter the city-state in its latest measures to fight the spread of the coronavirus and to conserve healthcare resources for its citizens.
The ban takes effect 23:59, Monday, local time.
The country will also only allow the return and entry of work pass holders, including their dependents, for those who provide essential services such as healthcare and transport.
The city-state, with a small and open economy, reported its first fatalities from the virus on Saturday and has confirmed 432 cases of the infection.
Almost 80% of its new cases over the past three days were imported.
On Saturday, it reported 47 new cases of coronavirus, 39 of which were imported and had a travel history to countries including Australia, Europe, North America and Southeast Asian nations, the health ministry said in a statement. A majority were returning residents and long-term pass holders.
Saturday's number of new cases is the same as the count reported on March 18, the city-state's biggest daily jump.
Singapore also reported two virus-related deaths on Saturday of people with underlying health conditions, marking the first fatalities in the city-state's widely praised battle against the infection.