School-Based Mandatory Masking Policies and Absenteeism in Ottawa, Canada
School-Based Mandatory Masking Policies and Absenteeism in Ottawa, Canada, in 2022
Pediatric COVID-19 Cases in Counties With and Without School Mask Requirements — United States, July 1–September 4, 2021
Alberta Health data & analysis (from Feb 7) shows that schools w/ mask mandates had 3x less outbreaks & adults in those communities had 3x less hospitalizations. Indirectly it shows that school infections do drive community spread.
1 study found coronavirus outbreaks were almost 4x more common at public schools w/o mask mandates on the 1st day than at those w/a masking requirement.
Another study found cases increased more in US counties where public schools had no mask mandates: