The main reason why people get salmonella disease is that people eat the under-cooked fruits, vegetables and meats which are infected with salmonella. Americans like eating raw foods, which pose a potential threaten to health. So to avoid salmonella disease, it is suggested that pick up certificated food and eat the cooked food as far as possible.
Finally, if you have diarrhea, fever and stomachache, don't hesitate to go to hospital to do Salmonella Test.