Thank you. SARS was a terrible memory for us, and we're determined not to repeat it again.
Not sure about the restriction, but I believe it's only a matter of time depending on how the situation develops in the US. We've gradually imposed a mandatory 14-day Stay Home Notice (SHN) or outright bans on incoming visitors (except returning residents) from several regions (US was not one of them) over the last week but as of tomorrow night the SHN will be enforced on all incoming passengers regardless of point of origin, with the bans still in force.
We just had our biggest daily surge in cases (47 in a single day) though they seem to be mostly residents returning from Europe. The crisis is far from over here and our authorities are warning that we may see bigger numbers in the coming days. Our neighbour, Malaysia, has already instituted a countrywide lockdown till Mar 31.