4 of them were unvaccinated.
There's no evidence he was infected by a patient, MOH said.
Written confirmation of their compliance was demanded by 12 Oct, 10am.
The company's lawyers are currently reviewing the case.
They must be accompanied by a vaccinated traveller.
Staff are often put in a tough spot between regulations & the public's expectations.
The petition is addressed to PM Lee & Health Minister Ong Ye Kung.
The couple's relations aren't fried due to the incident.
Police investigations are ongoing, but no foul play is suspected.
At least 5 of them directed traffic for over 30 minutes.