With booster shots now rolling out across the country, KCRA 3 connected with county public health departments across the area to answer your questions about supply, and how you can sign up for your third dose.The Centers for Disease Control and Prevention on Thursday endorsed the vaccine panel's recommendations for booster doses for Moderna's and Johnson & Johnson's coronavirus vaccines, opening up booster eligibility for millions."We have more than enough supply ," said John Fout, Yolo County spokesperson. Residents can go to the county's website for information on how to find neighborhood clinics, and make an appointment to get the Pfizer booster done right in their own home, through the county's Door Vax program. "We have enough for everyone," said Lynnan Svensson, director of public health nursing at the Sacramento County Public Health Department.Both Sacramento County and Stanislaus County directed people to go to the state's My Turn website to sign up for a booster dose.Currently, the only people eligible for boosters are people ages 65 and older, those who work in high-risk environments and those ages 50-64 with comorbidities and health complications."Anyone needing a booster will be able to get one," said Elizabeth McCuistion, spokesperson for the Stanislaus County Public Health Department.As the months get colder, public health officials said they're expecting more flu cases this year than last. In Sacramento County, you can get your flu and COVID-19 vaccine at the same time."It's safe to do that, it's effective, and it is a great way to protect yourself against two respiratory viruses at the same time," Svensson said.You can also get your Pfizer booster shot at neighborhood pharmacies, including Walgreens and CVS.