Food Safety During Pregnancy – 9.372

Print this fact sheet
by J. Dean and P. Kendall* ( 8/12 )

Quick Facts…

  • During pregnancy, changes in hormones cause a woman’s immune system to become suppressed, so that it is harder to fight off infections.
  • Pregnant women are at increased risk for some types of food borne illness.
  • Some food borne illnesses can cause a woman to have a miscarriage, stillbirth or serious health problems for the baby after birth.
  • Pathogens are organisms (bacteria, virus, parasite) that can cause illness in humans.

pregnancy is an excite, yet critical clock in a charwoman ’ s life. Because a mother ’ s health behaviors have directly effects on the health of her child, big mothers receive a batch of health information. Along with nutriment concerns, a growing topic of importance is food condom during pregnancy. pregnant women are at increased gamble for getting some foodborne infections because of the hormonal changes that occur during pregnancy. While such changes are necessary for survival of the fetus, they besides suppress the mother ’ second immune organization, thereby increasing the find of infection from certain foodborne pathogens.

Food Safety During Pregnancy
Examples of pathogens of special concern to pregnant women are Listeria monocytogenes, Toxoplasma gondii, Brucella species, Salmonella species and Campylobacter jejuni. Certain organisms can cross the placenta and increase the fetus ’ mho risk of becoming infected. infection can result in spontaneous abortion, spontaneous abortion, premature labor or austere complications for the baby. Certain organisms, including Listeria monocytogenes, Toxoplasma gondii, Salmonella typhi and Campylobacter jejuni, can have adverse consequences for the fetus if they cross the placenta .


listeriosis is a mannequin of infection that may result when foods containing the bacteria Listeria monocytogenes are consumed. L. monocytogenes is widely distributed in nature and is found in soil, ground water system, plants and animals. L. monocytogenes is much carried by humans and animals, and has the ability to survive unfavorable conditions, including refrigeration temperatures, food preservatives ( strategic arms limitation talks ), and conditions with small or no oxygen. It is, however, easily destroyed by cooking .
contagion from L. monocytogenes typically occurs in individuals with a weakened immune system, including meaning women. There is an calculate 14-fold increase in the incidence of listeriosis among pregnant women compared to non-pregnant adults. pregnant women make up 17 percentage of all cases of listeriosis. once in the bloodstream, Listeria bacteria can travel to any web site, but seem to prefer the central anxious system and the placenta. The fetus is unusually prone to contagion from L. monocytogenes, which can lead to a miscarriage, spontaneous abortion, or infection of the neonate and health problems following parturition .
Gastrointestinal symptoms may appear within 2 to 3 days of exposure. If the body does not open itself of the pathogen and the infection becomes invasive, symptoms such as fever, chills, concern, muscle aches and back aches may develop in 11 to 70 days after exposure. A blood test can determine if symptoms are caused by Listeria contagion and if confirmed, the patient can then be treated with antibiotics .
Foods typically associated with listeriosis include refrigerated ready-to-eat perishable foods with a long shelf life sentence that are eaten without further cook. Outbreaks have involved foods such as coleslaw, Mexican-style piano cheeses, milk, pâté, pork natural language, cantaloup, hot dogs, processed meats and delicatessen salads. Examples of foods that may harbor this pathogen include unpasteurized milk, raw milk products, raw and smoked seafood, and any refrigerate ready-to-eat processed foods, such as hot dogs, lunch meats or delicatessen meats, that have not been heated to proper temperatures before serving .
To avoid infection from L. monocytogenes, meaning women are advised to practice safe food handle procedures, such as storing all perishable foods between 35 and 40 degrees F and using perishable refrigerated ready-to-eat foods angstrom soon as possible. If a potentially hazardous perishable food can not be eaten within four days, it is best to freeze or discard it. Kitchen surfaces, cutting boards and utensils should be washed before and after food planning ( particularly after liaison with raw kernel or poultry ). pregnant women are advised to avoid eating easy cheeses made with bleak milk ( for example, Feta, Brie, Camembert, blue-veined cheeses, queso fresco, queso blanco and Panela ), unpasteurized milk and uncooked foods made with raw milk, raw or undercooked seafood, refrigerated smoked or precooked seafood, delicatessen seafood salads, and hot dogs, lunch meats, delicatessen meats and pâté unless reheated to steaming hot before serving or reformulated to prevent Listeria. Leftover foods should be reheated to 165 degrees F before eat .


toxoplasmosis, the infection caused by the parasite Toxoplasma gondii, can be passed to humans by water, scatter, dirt, or through corrode contaminated foods. Cats are the main server for T. gondii, and the merely server where the leech can complete its life cycle. T. gondii may be carried in the fur or feces of cats and then passed to other animals and people. If an animal becomes infected and its kernel is then consume raw or undercooked, the leech is passed to the human or animal that consumes the kernel .
It is estimated that 1.5 million people in the U.S. become infected with T. gondii each year. Most individuals do not experience recognizable symptoms, and will develop a protective resistance to the parasite. however, if a woman not previously exposed to T. gondii first acquires the parasite a few months before or during pregnancy, she may pass the organism to the fetus. This could result in spontaneous abortion, early on prenatal death, or serious health problems for the baby after parturition such as eye or brain damage. Symptoms in the pamper may not be visible at parturition, but can appear months or tied years belated .
If symptoms of contagion with T. gondii do appear in the meaning woman, they normally appear about 10 days after exposure to the parasite and include a gloomy grade fever with rash, brawn aches, headache and possibly swelling of the lymph nodes. infection may be confirmed by a blood quiz and treated with antibiotics. Prompt treatment of the mother with antibiotics reduces the hazard of passing the leech to the fetus, but can not change the course of the disease once the fetus has been exposed .
toxoplasmosis most frequently results from eating raw or undercooked kernel, eating common fruits and vegetables, cleaning a cat bedding material box or handle contaminated dirty .
To avoid infection from T. gondii it is significant that fraught women exercise condom food handling procedures such as washing all surfaces, cutting boards and utensils with hot, buttery water, specially those that come in contact with raw meat. pregnant women should wash hands often, specially after handling animals or working in the garden, keep off eating crude or undercooked meat ( particularly mince kernel, mouton and pork barrel ), and if they own or take care of a caterpillar, make certain the litter box is changed every day, preferably by a friend or family member .


salmonellosis is a park form of food infection that may result when foods containing Salmonella bacteria are eaten. The bacteria are spread through lead or indirect reach with the intestinal contents or waste of animals, including humans. It is estimated that 1.2 million cases of salmonellosis occur each year in the United States. Salmonella bacteria do not grow at refrigerator or deep-freeze temperatures and are easily destroyed by heating foods to 165 degrees F .
Symptoms of salmonellosis include concern, diarrhea, abdominal pain, nausea, chills, fever and vomit ; these normally appear within 12 to 72 hours after eating the contaminated food. Foods most often involved include raw ( unpasteurized ) milk and raw milk products, bare-assed or undercooked kernel and domestic fowl, raw or undercooked eggs, raw sprouts ( alfalfa, clover, radish, broccoli ), salads ( including chicken, tuna, potato ), and skim desserts and fillings.

fraught women are not at an increased risk for getting salmonellosis ; however, one type of Salmonella bacteria, called Salmonella typhi may be passed to the fetus. S. typhi is rare in the United States, but if transmitted to the fetus, can cause miscarriage, spontaneous abortion or premature tug .
To avoid infection from Salmonella bacteria, pregnant women should follow general safe food handle practices, including washing hands often with hot, buttery body of water, particularly after using the toilet and before and after handling food. Hands and working surfaces should be thoroughly washed after contact with raw kernel, fish, domestic fowl, and foods that will not undergo further cooking. fresh fruits and vegetables should be rinsed well before eating, and food such as raw milk and raw milk products, raw or undercooked eggs, raw sprouts, raw or undercooked kernel and poultry, and unpasteurized fruit juices should be avoided .


Consuming food or body of water that contains the bacteria Campylobacter jejuni causes an infection called campylobacteriosis. C. jejuni is found in the intestinal tracts of animals ( specially chickens ) and in untreated water. It ’ s a very coarse cause of diarrhea accompanied by fever in the United States. This organism thrives in a deoxidize oxygen environment and is inhibited by acerb, salt and dry. C. jejuni besides is easily destroyed by heating system ( 120 degrees F ) .
Although pregnant women are not at increased risk of becoming infected with C. jejuni, if they do get sick, the infection may spread to the placenta. Consequences of fetal infection include miscarriage, spontaneous abortion or preterm delivery. Symptoms normally appear within 2 to 5 days after eating the contaminated food and include fever, stomach cramps, muscle pain, diarrhea, nausea and vomit. infection from C. jejuni may be treated with antibiotics .
C. jejuni is most often found in raw ( unpasteurized ) milk and raw milk products, sensitive or undercooked kernel and domestic fowl, and raw shellfish. To avoid campylobacteriosis, meaning women are advised to consume only pasteurize milk and milk products and to thoroughly cook kernel, poultry and mollusk. Hands, surfaces, cutting boards and utensils that come in contact with raw meat, poultry or pisces should be washed well with hot, buttery water .

Preventing Food-borne Illness During Pregnancy

Preventing foodborne illness is constantly significant, but is specially so during pregnancy when the consequences can adversely affect the mother and the unborn child. Listed below are key behaviors important in ensuring the safety of the food you eat .

Practice Personal Hygiene

  • Always wash hands well with soap and warm running water for at least 20 seconds before handling food, after using the toilet, after changing a baby’s diaper, and after touching animals.
Safe endpoint cooking temperatures
Figure 1. Safe endpoint cooking temperatures.
To test the temperature of food, insert thermometer in the middle of the thickest part of the food you’re cooking and allow a few seconds for the thermometer to register. When testing the temperature of a hamburger, lift it out of the pan on a spatula and insert the thermometer from the side.

Cook Foods Safely

  • Use a food thermometer to make sure meat, poultry (including ground meats) and eggs are cooked to safe endpoint temperatures. See Figure 1.
  • Use a thermometer to make sure leftovers are reheated to 165 degrees F.
  • Always heat hot dogs to steaming hot before eating. Follow the instructions on the package or simmer for at least 5 minutes.
  • Heat lunch meats and deli meats to steaming hot before eating. This includes packaged lunch meats and those purchased at the deli. You can use a microwave, oven or grill. If you prefer lunch meats cold, they can be heated and then cooled before eating.
  • Cook shellfish until the shell opens and the flesh is fully cooked; cook fish until flesh is firm and flakes easily with a fork or to 145 degrees F.

Avoid Cross-Contamination

  • Wash knives, cutting boards and food preparation areas with hot, soapy water after touching raw poultry, meat and seafood.
  • As an added precaution, sanitize cutting boards and countertops by rinsing them in a solution made of 1 tablespoon liquid chlorine bleach per gallon of water.
  • Wash hands with soap and warm running water after handling raw foods.
  • Wash fresh produce well. Rinse fruits and vegetables, and scrub firm-skinned produce, under running tap water, including those with skins and rinds that are not eaten. Pat dry with paper towels.
  • Keep cooked and ready-to-eat foods separate from raw meat, poultry, seafood and their juices.

Keep Foods at Safe Temperatures

  • Store all perishable foods at or below 40 degrees F. Use a refrigerator thermometer to make sure your refrigerator is between 35 to 40
    degrees F.
  • Store eggs and other perishable foods in the refrigerator.
  • Use perishable foods that are precooked or ready-to-eat as soon as possible. If the food cannot be eaten within 4 days, it is best to freeze or discard it.

Avoid Foods from Unsafe Sources
Because meaning women are at high risk for infection from the pathogens discussed above, they are advised to avoid foods that may be contaminated with these harmful pathogens. See table 1 .

Table 1. Use the following guide to help choose safe foods during pregnancy, while avoiding foods from unsafe sources.
Instead of… Choose
Cold hot dogs, deli meats and luncheon meats Hot dogs, luncheon meats and deli meats reheated to steaming hot or 165F
Raw or undercooked meat and poultry Fully cooked meat and poultry
Raw or undercooked seafood Fully cooked seafood
Refrigerated smoked fish and precooked seafood such as shrimp, crab and deli seafood salads Tuna, salmon and crab meat in cans or pouches
Refrigerated pâtés and meat spreads Canned or shelf stable pâtés and meat spreads
Raw sprouts and unwashed fruits or vegetables, including lettuce/salads Cooked sprouts; Well washed fresh vegetables, including salads; Cooked vegetables
Soft cheeses made from raw milk such as Feta, Brie, Camembert, blue-veined cheeses, queso fresco, queso blanco and Panela Hard cheeses, processed cheeses, cream cheese, cottage cheese, mozzarella, and soft cheeses made from pasteurized milk
Raw or undercooked eggs Eggs that are cooked until the white and yolk are firm
Raw (unpasteurized) milk and milk products Pasteurized milk and milk products
Unpasteurized juice (May be called “fresh squeezed” or “chilled”) Frozen concentrate, canned juices and refrigerated juices that are labeled as pasteurized


For additional safe food handling guidelines, please see Colorado State University Extension fact sheet 9.300, Bacterial Foodborne Illness.

FSIS-USDA. 2010. Protect your Baby and Yourself from Listeriosis. available at : hypertext transfer protocol : //
Jackson, K.A., Iwamoto, M., Swerdlow, D. 2010. Pregnancy-associated listeriosis. Epidemiol. Infection. 138:1503-1509 .
Smith J. L. 1999. Food bear Infections during Pregnancy. J. Food Protection. 62 : 818-829 .
Smith J. L. 1997. long-run Consequences of Food-borne toxoplasmosis : Effects on the Unborn, the Immunocompromised, the Elderly, and the Immunocompetent. J. Food Protection. 60:1595-1611 .
USDA/FDA. 2011. Food Safety for Pregnant Women. hypertext transfer protocol : //
* J. Dean, former graduate scholar, department of food skill and human nutrition ; P. Kendall, Colorado State
University, associate degree dean for research, food science and human nutriment. 5/04. Revised 8/12.

Colorado State University, U.S. Department of Agriculture, and Colorado counties cooperating. extension programs are available to all without discrimination. No endorsement of products mentioned is intended nor is criticism implied of products not mentioned .
Go to top of this foliate .

reservoir :
Category : Health

Leave a Reply

Your email address will not be published. Required fields are marked *