Unfortunately Singapore has a large migrant workforce who live in conditions similar to a wetmarket and when these Migrant workers returned from holiday a firestorm of infection overwhelmed the country.
One interesting comparison is that of Ireland and New Zealand almost identical populations and both surrounded by a moat (island nations)
look how New Zealand has stopped the virus in its tracks compared with Ireland.
Date 22/04/2020
Country Cases Deaths Recovered
Ireland 16040 730 9233
New Zealand 1451 14 1036