ESCANABA — Delta County continued to report the largest number of cases of COVID-19 Monday, and new school-related case numbers showed U.P. students of all ages are being hit with the virus.

The Upper Peninsula had 4,264 confirmed cases of COVID-19, 696 probable cases, 69 deaths and four probable death linked to the disease, as of Monday according to state officials.

Delta County had a total of 876 confirmed COVID-19 cases, 129 probable cases, 17 deaths and one probable death; Menominee County had 531 confirmed cases, 76 probable cases and three deaths; and Schoolcraft County had 51 confirmed cases and three probable cases.

On Monday, the state released its most-current school-related outbreak numbers. Menominee County saw a new outbreak at North Centra Area Schools, in Powers, with two high school students testing positive for the disease.

The only other new school-related outbreak was recorded in Marquette at Sandy Knoll Elementary School, where two students were infected with the disease.

Schools are determined to be having a school-related outbreak if they have been found by their local health department to have two or more COVID-19 cases that may have shared exposure on school grounds and are from different households. Case counts for school-related outbreaks include those associated with before and after school programs, such as sports. When applicable, outbreak reporting also includes cases originating from on-campus and off-campus student housing.

Ongoing school-related outbreaks in the U.P. include Lakeview Elementary in Negaunee, where two staff members have tested positive; Superior Hills Elementary in Marquette, where five individuals, both students and staff, have tested positive; Bark River-Harris School, where a total of eight students and staff have tested positive; Gladstone High School, where two staff members have tested positive; Hancock Public Schools, where five high school students have tested positive; Escanaba Junior/Senior High School, where a total of eight students and staff have tested positive; Bay College in Escanaba, where 13 students tested positive; Michigan Technological University, where 23 students have tested positive; and Finlandia University, where 14 students have tested positive.

Schools are only part of the picture of how the virus has hit the U.P. Across the peninsula, Alger County had 76 confirmed cases of the disease, 20 probable cases and one death; Baraga County had 59 confirmed cases, 12 probable cases and four deaths; Chippewa County had 64 confirmed cases and 43 probable cases; Dickinson County had 444 confirmed cases, 10 probable cases, seven deaths and one probable death; Gogebic County had 214 confirmed cases, 63 probable cases, one death and one probable death; Houghton County had 704 confirmed cases, 149 probable cases and seven deaths; Iron County had 333 confirmed cases, 31 probable cases, 17 deaths and one probable death; Keweenaw County had 17 confirmed cases and one probable case; Luce County had 31 confirmed cases and nine probable cases; Mackinac County had 111 confirmed cases and 29 probable cases; Marquette County had 686 confirmed cases, 116 probable cases and 12 deaths; and Ontonagon County had 67 confirmed cases and five probable cases.

The state does not include infections or deaths within the Michigan Department of Corrections system in county-by-county counts.