Thousands of students and teachers have become sick with the coronavirus since schools began opening last month, but public health experts have found little evidence that the virus is spreading inside buildings, and the rates of infection are far below what is found in the surrounding communities.
This early evidence, experts say, suggests that opening schools may not be as risky as many have feared and could guide administrators as they chart the rest of what is already an unprecedented school year.
Tracking infections over a two-week period beginning Aug. 31, it found that 0.23 percent of students had a confirmed or suspected case of the coronavirus. Among teachers, it was 0.49 percent. Looking only at confirmed cases, the rates were even lower: 0.078 percent for students and 0.15 percent for teachers.
“These numbers will be, for some people, reassuring and suggest that school openings may be less risky than they expected,” said Emily Oster, an economics professor at Brown University who helped create the tracker. She noted that the school coronavirus rates are “much lower” than those in the surrounding community.
The information for her dashboard is voluntarily reported by schools and school districts, both public and private, including schools that offer in-person classes and those that are fully remote. As of Wednesday morning, the project had data from more than 550 schools, including more than 300 that have some in-person classes. Organizers are working to add more schools as they go.
“We’re not seeing schools as crucibles for onward transmission,” said Sara Johnson, associate professor of pediatrics at the Johns Hopkins University School of Medicine. “It’s reasonable to say that it looks promising at this point.”
These findings were underscored by an analysis this week in Science magazine, a leading academic journal. It found that children and adolescents are at a “much lower risk” for the coronavirus and said assumptions that schoolchildren would be a “key component” of the transmission chain are “most likely” wrong.
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