COVID-19 is a new disease, caused by a novel (or new) coronavirus that wasn’t previously seen in humans. Because it’s a new virus, scientists are learning more each day. Although most people who have COVID-19 have mild symptoms, COVID-19 can also cause severe illness and even death. Some groups, including older adults and people who have certain underlying medical conditions, are at increased risk of severe illness. Since the virus that causes COVID-19 is a newly identified strain of coronavirus, we still don’t know everything about the illness, but Health Alliance is keeping track of the latest details and recommendations from health officials like those at the CDC and state and local public health agencies.