Tbh, SG should have never let people come particularly from countries with covid outbreaks during March. While spreading across the dorms is a big part of the internal spreading, it's clear the outbreak that started in March were clusters involving people coming to sg from abroad.

Almost everyone shut down travel from China (particularly Wuhan) but no one shut down travel from Europe during March. Biggest mistake ever. I don't know enough if it was tourists or whether it was returning Singaporeans but they should have instructed them to remain where they were for the sake of the country.