On October 4, 2020, when COVID-19 was raging, American schools were mostly shuttered, and vaccines were believed to be years away, a team of top researchers at the world's most prestigious universities—including Stanford's Jay Bhattacharya, Harvard's Martin Kulldorff, and Oxford's Sunetra Gupta—published the Great Barrington Declaration, a controversial open letter challenging the official [...]

In mid-March 2020, many countries decided to close schools in an attempt to limit the spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus causing coronavirus disease 2019 (Covid-19).1,2 Sweden was one of the few countries that decided to keep preschools (generally caring for children 1 to 6 years of age) and schools (with children 7 to 16 years of age) open. Here, [...]