A fowl typhoid outbreak in a chicken breeder flock.

Fowl typhoid was diagnosed in a 1-year-old light-breed brown-egg-laying chicken breeder flock and in a 16-week-old progeny pullet flock on the same farm. Salmonella gallinarum was cultured from chickens in both flocks. Signs and lesions were typical. The disease was confined to the one farm. The source was suspected to have been a grossly contaminated well.