(WTNH) — The CDC is warning that backyard chickens and ducklings are responsible for a serious salmonella outbreak.

The outbreak has sickened nearly 1,000 Americans, sending 150 to the hospital and killing one person.

Backyard poultry, especially chickens, have become popular pets in the U.S. Health experts say poultry can carry salmonella bacteria even if they look clean and show no signs of illness.

The CDC warns backyard farmers not to kiss their poultry or snuggle them and then touch their face or mouth.