Table 1

Overview of the COVID-19 situation in Singapore during study recruitment

DateNew cases (imported)DischargedOverallActive cases (in ICU)Significant event(s)New measures taken
9 March10 (3)316067 (10)7 local clusters identified
Italian cruise ship Costa Fortuna returning as scheduled on 10 March 2020.
10 March6016673 (12)Singapore allowed 600 passengers to disembark from Costa Fortuna.Suspension of activities for seniors.
11 March12 (1)317882 (9)
12 March9 (5)018791 (9)COVID-19 announced a pandemic by the WHO.Islamic Religious Council of Singapore announced the closure of all mosques for 5 days from 13 March for disinfection.
13 March13 (9)1200103 (11)Singapore suspends events and gatherings of 250 people or more.
Singapore announced a ban on visitors arriving from Italy, France, Spain and Germany from 15 March.
Singapore ceased port calls for all cruise vessels with immediate effect.