Be Aware of Raw or Undercooked Foods
Foods from animals such as meat, poultry, fish, shellfish, and eggs when eaten raw or undercooked sometimes contain harmful viruses and bacteria that can pose a risk of foodborne illness.

Young children, pregnant women, older adults, and those with compromised immune systems are particularly vulnerable. You are at increased risk if you:

• Suffer from liver disease or alcoholism
• Have decreased stomach acidity (due to gastric surgery or the use of antacids)
• Have a compromised immune system due to:
  
  • Steroid use
  • AIDS
  • Cancer
  • Diabetes
  • Treatments such as chemotherapy

To reduce your chances of foodborne illness you should stay away from:

• Raw fish or shellfish - oysters, clams, sushi, sashimi, ceviche
• Meat or seafood ordered undercooked such as "rare" hamburger, beef, lamb, pork, or fish
• Eggs ordered undercooked and food with uncooked egg ingredients such as:
  
  • "Runny" fried or poached eggs
  • Dressings or sauces such as hollandaise, homemade mayonnaise, and Caesar salad dressing
  • Desserts like chocolate mousse, meringue pie, and tiramisu
• Raw or unpasteurized milk

Some Risky Foods To Eat (list not complete)
Raw or undercooked eggs: Cause of Illness - Salmonella Enteritidis
Caesar salad dressing
Soft-cooked eggs
Monte Cristo sandwich
Meringue pie
Some puddings and custards
Mousse
Sauces made with raw eggs (example - Hollandaise)

Raw dairy products: Cause of Illness -Listeria monocytogenes, E. coli O157:H7, Campylobacter, Salmonella
Raw or unpasteurized milk
Some soft cheeses like Camembert, Brie

Raw or rare meat: Cause of Illness - E. coli O157:H7, Salmonella
Hamburger
Carpaccio (raw beef, veal, venison, or tuna, sliced very thin or pounded thin, served as an appetizer)

Raw or undercooked: Cause of Illness - Vibrio vulnificus, Other vibrios, Hepatitis A
Molluscan shellfish
Raw clams or oysters on the half shell

Raw fish: Cause of Illness - Parasites, Vibrio parahaemolyticus
Sushi
Ceviche
Tuna carpaccio

Source: http://www.fda.gov