CSU ext

Salmonellosis is a world wide gastro-intestinal disease caused by the bacterium Salmonella, of which there are many types.  Salmonellosis is  zoonotic and is especially likely to be contracted by humans thru close contact with reptiles (lizards, snakes, and turtles) and young poultry  (chicks and ducklings) and potentially any animals with diarrhea. Dogs, cats, birds (including pet birds), horses, and farm animals can also pass Salmonella in their feces without showing signs of the disease.

chickens
Poultry can carry salmonella
How is it transmitted?  Salmonella are readily spread through food and water contaminated with feces from an animal or person shedding the organism in the feces. Handling high risk animals i.e. reptiles and birds, animals with diarrhea without appropriate sanitary and disinfection procedures increase the risks of acquiring Salmonellosis.

feces
Contamination of food and water sources with feces is a common means of transmission.

What are the signs in animals?  Sudden onset of high fever, depression, anorexia and death even before signs of diarrhea develop is common in young animals. In adult animals, fever, severe diarrhea often with blood present, dehydration and death is typical. Animals that recover may become carriers and shed the bacteria in their feces for variable lengths of time. Diarreha in animals may also be caused by cryptosporidia, giarrdia, E. coli, campylobactor and other bateria and viruses.

calf diarrhea
Diarrhea is the most common sign of Salmonellosis

What are the symptoms in humans? People develop diarrhea, fever, and stomach pain that start 1 to 3 days after they become infected. These symptoms usually disappear after 1 week. But if the diarrhea and fever persist, it is important for the person to see their physician  
More information at Merck Vet Manual:
http://www.merckvetmanual.com/mvm/index.jsp?cfile=htm/bc/22203.htm&word=Salmonella