As colleges reopened, many more young people got covid-19, CDC reports

The Northeast saw the biggest spike in virus cases among 18- to 22-year-olds, with a 144 percent increase. Cases in the Midwest among that age group also rose dramatically, with a 123 percent increase.

Also on Tuesday, a public university in North Carolina mourned the death of a student from complications that followed a covid-19 diagnosis.

As colleges across the country resume classes this fall, the incidence of virus cases is being closely watched to see if universities are increasing the spread of the novel coronavirus — and what students and school officials can do to try to prevent that.

About 45 percent of 18- to 22-year-olds are enrolled in college, according to the CDC. Colleges have crafted a wide array of plans, including efforts to starkly reduce communal housing, ramp up testing and persuade students to keep their distance from others. Some schools have seen case numbers in the thousands, while others report just a handful.

The CDC also examined a university that saw a dramatic spike in cases at the beginning of the semester. Communal housing and student gatherings both on and off campus probably contributed to the clusters of cases at a university in North Carolina, the agency concluded in a separate report released Tuesday.

The swift spread of the disease at the school “underscores the urgent need to implement comprehensive mitigation strategies,” according to the report.

The CDC did not name the university, but footnotes implied it was the University of North Carolina at Chapel Hill, the state’s flagship campus, which had clusters of cases in August.

Universities should take enhanced precautions to prevent the spread of the novel coronavirus, the agency recommended, including reducing the number of people living in dorms, ensuring people are complying with public health guidelines, increasing testing for the virus and discouraging students from gathering in groups.

Preventing spread of the coronavirus at universities “presents a unique set of challenges because of the presence of congregate living settings and difficulty limiting socialization and group gatherings,” the report noted.

Very little data was available before August about the coronavirus at universities, since most schools shut down abruptly last March, sending students home to finish spring classes online. In August some universities reopened dorms and classrooms to a certain extent, providing a glimpse of what could happen.

At UNC-Chapel Hill, the start of the school year in August looked very different from normal, with students in masks, much of the instruction online and many fewer students in dorms. Still, 5,800 students lived on campus, and many more lived nearby in and around Chapel Hill.

And just a week after classes began, faced with a spike in cases among students at three dorms and a fraternity house, school officials announced a reversal and implementation of all-virtual instruction.

Spokesmen for UNC did not immediately respond to a request for comment Tuesday.

A spokesman for North Carolina State University, which executed a similarly abrupt pivot days after UNC amid rising numbers of coronavirus cases on campus,