As flu season ramps up and COVID and RSV cases continue to circulate, many people are unsure which vaccines to get — and when. Dr. James Q Simmons breaks down the latest vaccine guidance, including the ideal timing for flu shots, how long it takes to build immunity, and what side effects to expect. He also shares simple ways to prepare your body and stay healthy through the colder months.
This segment aired on KTLA’s Off the Clock on Nov. 20, 2025.
