St. Louis — 666. The Minnesota Department of Health has expressed concern about the increased positivity rates among the school-age population, and encourages parents of 16- and 17-year-olds to get their students vaccinated. Only the Pfizer vaccine is approved for those ages 16-17. Over the past week in St. Louis County, those age 4 and under had nine new cases; ages 5-9 had 22 new cases; ages 10-14 had 11 new cases; and those ages 15-19 had 28 new cases. Statewide COVID-19 cases over the past week by age group were: age 4 and under, 396; ages 5-9, 626; ages 10-14, 920; and ages 15-19, 1,176. From March 28 through April 3, there were 796 more positive cases in schools statewide, with 120 new cases among staff and 676 new cases among students. The state reported one staff member spent time in the ICU and one student was hospitalized last week.