The county would not say where the person worked, but Douglas County county officials are calling such decisions “super spreader actions,” and they’re sounding the alarm to prevent more from happening.

It’s a nuanced twist on super spreader events, where people knowingly ignore public health guidance to gather in large groups, said Bob Dannenhoffer, public health officer in the county. With super spreader actions, it can boil down to one person’s choices.

“The latest and most concerning trend is that we are seeing cases where residents are choosing to go to work and school when they are still sick,” he said in a statement. “We can’t even imagine the tremendous remorse these people are feeling right now, and we sympathize with them.”