At one of the facilities where I work, we have had 10 patients test positive, and several staff members. No one has been gravely ill yet, but several are still in hospital needing oxygen and monitoring.
My experience/observation has been: this is fairly contagious (went very quickly through our place, although that may be due to lack of a vaccine to slow it) and is worse than the flu (you may not get very sick, but more people get very sick fast than with influenza).