PINELLAS COUNTY, Fla. — The Department of Health in Pinellas County is holding three “BooFlu” events to offer flu vaccines for free. The annual event is taking place at three different locations over three days this year. Adults and children over three can get vaccines at no cost without an appointment. Event locations: Tuesday, Oct. 20, in St. Petersburg: 205 Dr. Martin Luther King Jr. St. N.Wednesday, Oct. 21, in Mid-County: 8751 Ulmerton Rd., LargoThursday, Oct. 22, in Clearwater: 310 N. Myrtle Ave.The events are from 5 to 7 p.m. The vaccines are on a first-come, first-served basis while supplies last. Click here for the immunization registration/release form.