New Hampshire health officials are alerting the public a person with COVID-19, the disease caused by the coronavirus, attended an event that began at 7 p.m. Saturday, March 14 in the Garrish Gym at Coe-Brown Academy in Northwood.

Any individual who attended the event on March 14 in the Garrish Gym at Coe-Brown Academy may have been potentially exposed to the novel coronavirus and should observe their health for fever or respiratory illness, officials said. Any person who was in the Garrish Gym during the event and develops symptoms should stay away from other people, and immediately contact their health care provider.

The risk of exposure applies only to the Garrish Gym during the event at 7 p.m. and not to attendance at the school or at other school activities, according to state health officials.

DHHS announced 21 new positive test results for COVID-19, bringing the state’s total to 158 cases diagnosed in New Hampshire. The new cases are 15 women, five men and one male under age 18. The new cases reside in Rockingham (11), Merrimack (2) Hillsborough County other than Manchester and Nashua (1), Cheshire (1), Grafton (1), and Sullivan (1) counties, and in the city of Manchester (4).

Five of the new cases have no identified risk factors. Community-based transmission continues to increase in the state and has been identified in the majority of counties. The remaining cases have either had travel to domestic or international locations or have had close contact with a person with a confirmed COVID-19 diagnosis. Three of the new cases are currently hospitalized; thus far, 25 patients of the 158 positive cases (16%) have been hospitalized.

Officials said a person with COVID-19 was at Honey Dew Donuts, Season’s Corner Market, 501 South Broadway in Salem on March 17 from 5-6 a.m., March 18 from 5-10 a.m. and March 19 from 5-7:30 a.m.