http://www.sciencemag.org/news/2021/01/new-coronavirus-variant-scrambles-school-risk-calculations

A girl gets tested for the pandemic coronavirus in Lansingerland, Netherlands, this week, as part of an effort to track spread of a variant that caused an outbreak at a local school.

Science’s COVID-19 reporting is supported by the Pulitzer Center and the Heising-Simons Foundation.