https://www.marketwatch.com/story/how-in-person-college-reopenings-could-be-affecting-covid-19-spread-one-study-linked-3-000-cases-a-day-to-campuses-11600890869
New study estimates link between in-person college reopenings and COVID-19 cases
Last Updated: Sept. 24, 2020 at 9:06 a.m. ET
First Published: Sept. 23, 2020 at 3:54 p.m. ET By Jillian Berman
大学の対面授業の再開とCOVID-19の新規発生の関連を調査した医学論文が公表され、
再開は新コロナウイルス新規患者と深く関わると推測

A paper by an economist at the University of North Carolina at Greensboro, an
epidemiologist at Indiana University, and a higher education expert at Davidson
College (among others), found that colleges reopening for in-person instruction
was associated with 3,000 new cases of COVID-19 per day in the U.S. The researchers
estimated a 95% confidence interval for the findings of between roughly 1,000 and
5,000 cases.
“These colleges that chose to open for face-to-face instruction, they’re
contributing to county case counts,” said Martin Andersen, an assistant professor of
economics at UNC-Greensboro and one of the authors of the study.
再開は一日あたり3000件（95%確率で1000〜5000）の新規患者発生につながる

“We would love to be able to take this result and say ‘OK campuses, do this and you’ll
be able to protect your community.’ We’re not in a position to do that yet,” Andersen
said. “We are in a position to say ‘be thoughtful, be careful.’ We’ve shown you some
of the costs of being a face-to-face institution.” As colleges consider their plans for
the spring semester, for example, Andersen said, they can weigh these potential costs of
in-person instruction against the benefits.