sentences:  Dominique Mosbergen at the Huffington Post said that COVID-19 "exposes ugly truth about Singapore’s treatment of migrant workers".As the situation continued to evolved, it became clear by the middle of April that while cases had remained reasonably low in the general population, there was a significant spike in cases of foreign workers who were housed in dormitories, leading to their declaration as Isolation Areas under the Infectious Disease Act.The significant increase in cases towards the end of April was brought about because of the close proximity and intermingling of workers the packed dormitories, but also because of aggressive testing of the part of the Singapore government to try to get a hold on the situation.