The CDC has recently reported a multistate Salmonella food poisoning outbreak associated with live poultry. Many ill people reported purchasing live poultry for backyard flocks from feed supply stores and hatcheries. Many ill people reported bringing live poultry into their homes, and others reported kissing or cuddling with the live chicks. According to the CDC, these behaviors can definitely increase your chance of becoming ill.
If you have livestock of any type, including backyard chicks, make sure you wash your hands well before and after handling them. I would also recommend that you use certain shoes when outside with livestock, clean them regularly, and leave them outside the house when you come inside.
