Gov. Pete Ricketts enacted enforceable restrictions in several additional counties over the weekend in an effort to slow the spread of COVID-19 in the state.

Latest COVID-19 news: netNebraska.org/coronavirus

A total of 18 counties are now under state-issued Directed Health Measures, which ban gatherings of more than 10 people and restrict bars and restaurants to drive-thru, carry-out and deliver. This is the fourth measure from Gov. Pete Ricketts' office:

March 18: Cass, Douglas, Sarpy counties until at least April 30.

March 25: Dodge, Lancaster, Saunders, Washington counties until at least May 6.

March 28: Butler, Hall, Hamilton, Merrick, Polk, Seward, York counties until at least May 6.

March 29: Burt, Cuming, Madison, Stanton counties until at least May 6.

The Nebraska Department of Health and Human Services says a COVID-19 case has appeared in northeast Nebraska's Madison County. It is a man in his 70s residing an at unnamed long-term care facility in Norfolk, where he is currently self-isolating.

The case is identified as "community-spread," which means health officials can't determine how the person contracted the infection. According to the state's plan, if a community-spread case is identified in a county, all counties in the same public health district will be placed under a DHM.

More than 20 cases of COVID-19 were added to the state's total Saturday and Sunday. There are now 109 cases in 18 counties.

Latest COVID-19 news: netNebraska.org/coronavirus