After going through much research, below are the overview of foods to avoid while going through pregnancy:
Avoid Unpasteurized Food
Risk: Unpasteurized food that contain Listeria bacteria may cause miscarriage or harm the fetus
    | 
|  |  | Unpasteurized Cheese |  |  | 
Avoid Uncooked Food
Risk: Uncooked food contains bacteria or parasites (e.g. Toxoplasmosis) that can cause harm to fetus
- Ensure meat are fully cook (e.g. well done steak)
- Ensure egg are fully cook
- Avoid sushi food as to avoid eating raw fish
- Avoid food that contains raw ingredient such as raw egg
    | 
|  |  | Fully Cook Meat |  | 
|  |  | Fully Cook Egg |  | 
|  |  | Avoid Sushi food |  | 
Avoid Food with High Vitamin A
Risk: Too much Vitamin A can cause problem to fetus development
A pregnant women is recommended by Institute of Medicine to get 2,565 IU of Vitamin A daily.
3 ounces of cooked beef liver contains 27,185 IU of Vitamin A.
3 ounces of cooked chicken liver contains 12,325 IU of Vitamin A.
A rough guide: 3 ounces = 85 grams
    | 
|  |  | Liver |  | 
Avoid Chilled Ready-to-Eat Foods
Risk: To avoid harmful bacteria like listeria that can harm the fetus
    | 
|  |  | Pate |  | 
|  |  | Pre-packed Sandwich |  | 
Ensure Fruits and Vegetables are Wash Before Eaten
Risk: To avoid harmful bacteria in the fruits and vegetables that may had contact with soil, damaged leaves, etc
Avoid Certain Type of Fruits and Vegetables
- Avoid eating raw bean sprouts because the growing procedure could contain harmful bacteria to fetus
- Pineapple contains a small amount of bromelain enzyme that may cause diarrhea or induce labor. For safe side purpose, it's best to avoid during 1st and 2nd trimester.
    | 
|  |  | Bean Sprout |  | 
|  |  | Pineapple |  | 
Avoid Seafood with High Mercury or Shellfish
Risk:
- Mercury are harmful to fetus
- Do avoid shellfish as part of precaution as shellfish contains virus, bacteria or toxin which are harmful to the fetus. Example of shellfish are: oysters, mussels, scallops, clams, prawns, shrimps, crabs, crayfish.
Highest Mercury Seafood (Avoid Eating)
    | 
|  |  | King Mackerel |  | 
|  |  | Marlin |  | 
|  |  | Orange Roughy |  | 
|  |  | Shark |  | 
    | 
|  |  | Swordfish |  | 
|  |  | Tilefish |  | 
|  |  | Bigeye Tuna / Ahi |  | 
High Mercury Seafood (Eat 3 servings or less per month)
    | 
|  |  | Bluefish |  | 
|  |  | Grouper |  | 
|  |  | Spanish Mackerel |  | 
|  |  | Chilean Sea Bass |  | 
    | 
|  |  | Albacore Tuna |  | 
|  |  | Yellowfin Tuna |  | 
 | 
 | 
Moderate Mercury Seafood (Eat 6 servings or less per month)
    | 
|  |  | Striped Bass |  | 
|  |  | Carp |  | 
|  |  | Alaskan Cod |  | 
|  |  | White Croaker Pacific |  | 
    | 
|  |  | Pacific Halibut |  | 
|  |  | Atlantic Halibut |  | 
|  |  | Lobster |  | 
|  |  | Monkfish |  | 
    | 
|  |  | Silverside Jacksmelt |  | 
|  |  | Mahi Mahi |  | 
|  |  | Freshwater Perch |  | 
|  |  | Sablefish |  | 
    | 
|  |  | Skate |  | 
|  |  | Snapper |  | 
|  |  | Chunk Light Tuna |  | 
|  |  | Sea Trout Weakfish |  | 
    | 
|  |  | Skipjack Tuna |  |  |  |  | 
Lowest Mercury (Eat 2 servings per week)
    | 
|  |  | Anchovies |  | 
|  |  | Butterfish |  | 
|  |  | Catfish |  | 
|  |  | Atlantic Croaker |  | 
    | 
|  |  | Flounder |  | 
|  |  | Atlantic Haddock |  | 
|  |  | Hake |  | 
|  |  | Herring |  | 
    | 
|  |  | Clam |  | 
|  |  | Domestic Crab |  | 
|  |  | Crawfish/Crayfish |  | 
|  |  | Oyster |  | 
    | 
|  |  | North Atlantic Chub Mackerel |  | 
|  |  | Mullet |  | 
|  |  | Ocean Perch |  | 
|  |  | Salmon |  | 
    | 
|  |  | Pollock |  | 
|  |  | Plaice |  | 
|  |  | Shrimp |  | 
|  |  | Pacific Sole |  | 
    | 
|  |  | Sardine |  | 
|  |  | Scallop |  | 
|  |  | American Shad |  | 
|  |  | Squid / Calamari |  | 
    | 
|  |  | Tilapia |  | 
|  |  | Freshwater Trout |  | 
|  |  | Whitefish |  | 
|  |  | Whiting |  | 
Resources:
http://www.nrdc.org/health/effects/mercury/guide.asp
http://www.americanpregnancy.org/pregnancyhealth/fishmercury.htm
http://www.fda.gov/Food/ResourcesForYou/HealthEducators/ucm091671.htm
http://www.foodsafety.gov/keep/types/fruits/sprouts.html
http://www.nlm.nih.gov/medlineplus/druginfo/natural/895.html
http://www.mayoclinic.com/health/pregnancy-nutrition/PR00109
http://www.nhs.uk/chq/Pages/can-I-eat-shellfish-during-pregnancy.aspx?CategoryID=54&SubCategoryID=216
http://www.nhs.uk/conditions/Listeriosis/Pages/Introduction.aspx
Thank you so much for the wonderful information.This is really important for me.I am searching this kind of information from a long time and finally got it.
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