Shasta County health officials on Thursday added a sixth public exposure site connected to a confirmed measles case, identifying a Redding business owned by a sitting county supervisor as a location where contact tracing is underway, according to a county press release.

REDDING, Calif. — Shasta County Health and Human Services Agency is investigating a confirmed measles case in Shasta County, the agency said in a Friday press release. The patient is in isolation to prevent the spread of the highly contagious disease until the infectious period is over.