What are your burning questions about the flu and Covid-19 vaccines? You might want to know how do they work, are they 100% effective, can everyone get one, why do we need boosters, are they safe, is natural immunity better, do children need a flu vaccine, what’s in an mRNA vaccine, or simply how do I know if I’m eligible and where can I get one? Today, you'll get the answers you need to make an informed choice about vaccination. | Bristol.Live