COVID-19 incidence was 37% lower in schools that required teachers and staff members to
use masks and 39% lower in schools that improved ventilation. Ventilation strategies …

OBJECTIVES Throughout the COVID-19 pandemic, masking has been a widely used
mitigation practice in kindergarten through 12th grade (K–12) school districts to limit within …

SARS-CoV-2 Transmission to Masked and Unmasked Close Contacts of University Students
with COVID-19 — St. Louis, Missouri, January–May 2021 | MMWR Skip directly to site content …

The COVID-19 pandemic continues to generate challenges for pediatric solid organ
transplant (SOT) recipients and their families. As rates of COVID-19 fluctuate, new SARS …

Evaluation of a Test to Stay Strategy in Transitional Kindergarten Through Grade 12 Schools
— Los Angeles County, California, August 16–October 31, 2021 | MMWR Skip directly to site …

Methods The study occurred from June 14, 2021, to August 13, 2021, in K–12 districts in
North Carolina that offered in-person summer school instruction and year-round schools …

OBJECTIVES With layered mitigation strategies, there are low rates of secondary
transmission of severe acute respiratory syndrome coronavirus 2; therefore, quarantine after …

Abstract Background Transmission of SARS-CoV-2 in schools primarily for typically
developing children is rare. However, less is known about transmission in schools for …

OBJECTIVES Masking is an essential coronavirus 2019 mitigation tool assisting in the safe
return of kindergarten through 12th grade children and staff to in-person instruction; …

OBJECTIVES We evaluated the impact of a test-to-stay (TTS) program on within-school
transmission and missed school days in optionally masked kindergarten through 12th grade …