Strange virus making the rounds

I work in a nursing home type facility. There is a virus going through the staff and clients now. It’s negative for Covid and flu but obviously a viral infection (sinus, respiratory distress, fatigue, body aches). It lingers and is very unpleasant. No one has died but there have been serious complications in weakened individuals. It’s probably just a typical bug but without a functioning cdc I wanted to put it out there.