Is there a vaccine for Typhoid in chickens? There is an ad on our locatCraigslist with baby chicks for sale, they vaccinate their chicks for Mareks and Typhoid vaccinations. Would it be safe to purchase chicks that are vaccinated? I have other chicks that are not vaccinated. I know Mareks vaccine is a live vaccine, what I have been told that all my chicks would have to be vaccinated or they would catch the disease. Is that true? What about the typhoid vaccine? Does anyone know anything about it? Do other chicken people vaccinate against this? Any information would be appreciated. Thanks