How did one choir practice lead to a high rate of COVID-19 spread?

Imagine a group of 61 people gathering for a choir practice in Skagit County, Washington. This wasn't just another rehearsal—it became a case study in how quickly COVID-19 can move through a room. The report found a high attack rate, meaning many people who attended got sick with the virus. We don't know the exact number of cases or how severe they were, but the pattern was clear: when people gathered indoors to sing, the virus found plenty of opportunities to spread. This is just one observation from a specific event, not a controlled study. The researchers reported an association between the choir practice and the spread, but they can't prove exactly what caused it or how many people would get sick in other settings. What we can take from this story is a sobering reminder: group activities in enclosed spaces carried real risk during the pandemic, even when people didn't know they were sick.