Source of illness: Raw and undercooked meat and poultry. Symptoms: Abdominal pain, diarrhea, nausea, and vomiting. Bacteria: Campylobacter jejuni, E. coli O157:H7, L. monocytogenes, Salmonella.  Source of illness: Raw (unpasteurized) milk and dairy products, such as soft cheeses. Symptoms: Nausea and vomiting, fever, abdominal cramps, and diarrhea.  Bacteria: L. monocytogenes, Salmonella, Shigella, Staphylococcus aureus, C. jejuni.  Source of illness: Raw or undercooked eggs. Raw eggs may not be recognized in some foods such as homemade hollandaise sauce, caesar and other salad dressings, tiramisu, homemade ice cream, homemade mayonnaise, cookie dough, and frostings. Symptoms: Nausea and vomiting, fever, abdominal cramps, and diarrhea. Bacteria: Salmonella enteriditis.  Source of illness: Raw or undercooked shellfish. Symptoms: Chills, fever, and collapse.  Bacteria: Vibrio vulnificus, Vibrio parahaemolyticus. Source of illness: Improperly canned goods, and smoked or salted fish. Symptoms: Double vision, inability to swallow, difficulty speaking, and inability to breathe. (Seek medical help right away!) Bacteria: C. botulinum.  Source of illness: Fresh or minimally processed produce. Symptoms: Diarrhea, nausea, and vomiting. Bacteria: E. coli O157:H7, L. monocytogenes, Salmonella, Shigella, Yersinia enterocolitica, viruses, and parasites.