But the alarming exponential rise in the last week has been around Singapore's migrant worker population - the hundreds of thousands of men from poorer countries employed in construction, shipping, and maintenance.
Singapore is utterly dependent on these workers to keep its economy operating, but they are jobs in which social distancing is all but impossible.
On top of that, the workers are required by law to live in dormitories - privately-run facilities which house up to 12 men per room, with shared bathroom, cooking and social facilities.
It seems almost inevitable that these dorms would become clusters, and indeed they did.
Close to 500 cases have now been confirmed in several dormitory clusters - one facility alone makes up 15% of all cases nationally.