COVID-19 symptoms kicked off a chain reaction of transmission that saw 22 people infected and more than 200 people forced to self-isolate in just 15 days, according to the local public health unit.Ottawa Public Health (OPH) shared a diagram on Twitter on Thursday morning to illustrate how quickly the novel coronavirus can spread in large group settings when precautions aren’t taken.At a September indoor wedding with roughly 50 people in attendance, one person attended the event despite having mild symptoms of COVID-19, OPH said.Attendees were not physically distancing or wearing masks at the event, so when those symptoms were later confirmed to be COVID-19, 49 other high-risk contacts were created.In total, 22 people tested positive for the.