SIOUX FALLS, S.D. (AP) — Sanford is currently identifying patients and others who may have had contact with a physician at its Watertown clinic who has tested positive for the coronavirus.

Dr. William Devine isolated himself at home as soon as he developed symptoms, according to the health care system. It’s believed his exposure to patients was limited.

Those who were seen by Devine on or after March 25 will be contacted by the South Dakota Department of Health.

Sanford is also encouraging patients who have had recent contact with Devine to monitor themselves closely and call the Watertown clinic or schedule an e-visit if they have COVID-19 symptoms.

For most people, the coronavirus causes mild or moderate symptoms, such as fever and cough that clear up in two to three weeks. For some, especially older adults and people with existing health problems, it can cause more severe illness, including pneumonia, and death.