On Monday, the San Diego Unified School District, the second largest K-12 system in the state of California and among the top 25 in the country, reimposed an indoor masking requirement on all students and staff, in response to increased COVID-19 infections in the surrounding community.
The re-masking was triggered automatically via a district decision this past May when San Diego County on Friday crossed the threshold deemed by the Centers for Disease Control and Prevention (CDC) to indicate a "high" level of community spread—above 200 new cases per 100,000 residents over a 7-day rolling average and above 10 percent of staffed hospital beds in use by COVID patients. The CDC's guidance for schools and child care facilities, which San Diego adheres to, is that "universal indoor mask use is recommended at a high COVID-19 Community Level."
