The document announces a free flu shot event taking place on October 26th at three locations in the Fremont, Oakland, and Berkeley areas from 10am to 5:30pm. Free flu shots and raffle prizes will be provided on a first-come first-served basis, and interested individuals are asked to register online by October 21st. The event is being organized by the Alameda Alliance for Health and the Alameda County Medi-Cal 50th Anniversary Planning Coalition to celebrate the 50th anniversary of Medi-Cal.