Sandy
Some thoughts on this. Yes birds require a higher bacterial load to get infected as they become aged. One probable reason is salmonella infection in birds will induce a tolerance- development of T-regulatory cells. This might be one reason why they require a higher bacterial load. Our lab conducts research in avian immunology- including pathogens such as coccidia and salmonella. Please keep in touch. My email id -morris.1031@osu.edu.
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