CDC report confirms unvaccinated Marin County teacher was source of Delta variant outbreak

A classroom is empty with the lights off on what would otherwise be a blended learning school day on November 19, 2020. (Photo by Michael Loccisano/Getty Images)

The Centers for Disease Control says an unvaccinated teacher caused a COVID-19 outbreak at an elementary school in Marin County.

Health agency officials report that the May 2021 outbreak led to 27 confirmed cases of the Delta variant. The group of infected individuals includes five adults, one of which is the teacher, and 22 students and siblings.

All of the infected students are too young for any of the available COVID-19 vaccines.

UCSF Infections Disease Expert Peter Chin-Hong says this incident highlights the need for teachers and school staff members to be fully vaccinated.

The CDC says 18 of the 27 cases were sequenced, and they all were found to be the Delta variant.

The CDC says that this incident illustrates just how contagious the Delta variant is.

To read the full report from the CDC, click here.