"Of the 15 cases in the community, 11 were picked up as a result of our proactive surveillance and screening, and 3 had already been placed on quarantine earlier. 14 of the cases are asymptomatic, and were detected through our proactive testing. "
14 of 15 cases are asymptomatic. Only jurisdictions doing selective PCR testing of some social groups not displaying any symptoms may give a hint to how many people are having COVID but do not know about. It's pretty typical here 14 of 15, 20 of 24, and similar numbers...