Detecting in-school transmission of SARS-CoV-2 from case ratios and documented clusters

medRxiv [Preprint]. 2021 Apr 28:2021.04.26.21256136. doi: 10.1101/2021.04.26.21256136.


Claims that in-person schooling has not amplified SARS-CoV-2 transmission are based on similar infection rates in schools and their surrounding communities and limited numbers of documented in-school transmission events. Simulations assuming high in-school transmission suggest that these metrics cannot exclude the possibility that transmission in schools exacerbated overall pandemic risks.

Keywords: K-12 education; SARS-CoV-2; school transmission.

Publication types

  • Preprint