LITTLE ROCK, Ark. (AP) — Arkansas health officials on Sunday reported 672 new cases of COVID-19 and another 15 deaths linked to the disease caused by the novel coronavirus.

There were 660 new, confirmed cases of the virus and 12 probable cases recorded Sunday, according to the Arkansas Department of Health. Officials said 11 new deaths were confirmed to be linked to COVID-19 and four more were probably caused by the disease.

The new counts bring the state’s total tallies to 306,736 cases and 5,076 fatalities.

Arkansas reported 16,324 active cases of the virus Sunday. The actual number is believed to be far higher because many people haven’t been tested and some who get sick don’t show symptoms.

The number of Arkansas residents hospitalized with COVID-19 stood at 781 Sunday, an increase of 31 from Saturday.

Over the past week, more than 11% of COVID-19 tests in Arkansas have come back positive, according to data from Johns Hopkins University.

For most people, the coronavirus causes mild or moderate symptoms that clear up within weeks. But for others, especially older adults and people with existing health problems, the virus can cause severe illness and be fatal.