The fear of salmonella is spreading everywhere and even across the continents. People have stopped eating tomatoes because they might be infected with salmonella. Salmonella is a group of bacteria that can cause diarrhea in humans. They are microscopic living creatures that pass from the feces of people or animals to other people or other animals. There are many different kinds of salmonella bacteria. Most persons infected with salmonella develop diarrhea, fever, and abdominal cramps 12 to 72 hours after infection. The illness usually lasts 4 to 7 days, and most persons recover without treatment, but for some it can prove fatal. So how to know that the tomato you are about to consume is infected with salmonella? This link tells you how to find that.