‘The stakes are enormous’: Invasive fruit fly forces quarantines in two Bay Area counties

Parts of Contra Costa and Santa Clara counties are under quarantine for the oriental fruit fly after the discovery of multiple flies in each county, according to a statement from the California Department of Food and Agriculture.

In Contra Costa County, detections near Brentwood and Oakley resulted in a quarantine zone covering 99 square miles, bordering the San Joaquin River to the north, Marsh Creek State Park to the south; Black Diamond Mines Regional Preserve to the west, and Old River to the east.