[debono]

https://www.channelnewsasia.com/singapor...-4-2253251

The US Centers for Disease Control and Prevention (CDC) adjusted its advisory for Singapore by one rung to Level 4, which indicates a “very high level of COVID-19”.

"Because of the current situation in Singapore, even fully vaccinated travellers may be at risk for getting and spreading COVID-19 variants," said CDC.

The US' health protection agency said those who must travel to Singapore should be fully vaccinated, and that they should follow the country's recommendations or requirements, including wearing a mask and observing safe distancing measures.

In order to reduce covid-19 infection, safe distancing measures and wearing of a face mask is highly recommended.  Also, the 2 vaccinations and a booster jab will make infections less likely..