Hello, to everybody in this magnificent website, my question is, if anybody here has experience vaccinating adult chickens against Merecks disease? What are the consequences? the chicken doesn't get any protection at all against the disease as adults? Can they develop the illness from the vaccine? I lost already a 6-month-old an 8-month-old and a 2-month-old chicken I don't one to lose no more of them, please any advice will be appreciated?