The Upper Missouri District Health Unit is urging residents to make flu prevention a priority this fall by getting vaccinated. The health unit will hold a series of walk-in flu and COVID-19 vaccination clinics at its Williston office, 110 W. Broadway, Suite 101. Like RSV, influenza spreads more easily during colder months, with cases typically peaking between December and February. Flu vaccines remain the most effective way to prevent serious illness, according to the health unit. Get our free mobile app“Just like eating healthy foods and exercising, getting vaccinated is part of staying well,” the health unit said in a statement.