Almost any kind of food and food or beverage can carry the bacteria that causes salmonella infection, although meat and eggs are the most common sources.
How it progresses??
Bacteria travel to small intestine , sticks to the lining and begin its life cycle. In severe cases bacteria break through intestinal wall to blood stream.
It can be deadly if not properly treated.

Symptoms:
Within 12 - 72 hours Nausea,Vomiting,Fever,Abdominal cramps
4-7 days illness range from mild to severe cases. Most people recover without treatment.
Severe cases more likely with infants,elderly people with impaired immune system.

Treatment:
Oral or injected antibiotics for 2 days