According to the Food and Drug Administration, Salmonella is an organism that can cause serious and sometimes fatal infections in young children, elderly people and others with weakened immune systems. Healthy persons, if affected, may present symptoms such as fever, diarrhea (which may be bloody), nausea, vomiting and abdominal pain. In rare circumstances, Salmonella can result in the organism getting into the bloodstream and producing more severe illnesses such as arterial infections and arthritis.