Avoiding Cross Contact
Cross contact is the presence of unintended food allergen
- It is a common cause of allergic reactions.
- Allergens can withstand heating and drying.
- Even tiny amounts of allergens are enough to cause serious allergic reaction.
- If a mistake is made when preparing a food, throw out the item and start over.
- Routine training for all caregivers about sources of cross contact is essential.
Common sources of cross contact:
The following are just a few examples of common sources of cross contact. See the table at the end of this page for more examples of cross contact and potential alternatives.
Objects Utensils, cooking surfaces, highchairs, pacifiers, sponges, bib, apron, etc.
Using the same tongs to flip shrimp and a chicken breast. Without properly washing the tongs in-between use, allergens may be transferred to the chicken breast.
Food Steam, splatter, accidental contamination, frying oil
Removing nuts from a salad or scraping cheese off a cheeseburger.
Saliva People, pets, binky, Sophie the Giraffe, musical instrument, etc.
Sucking on another baby’s pacifier after they had a bottle of milk-based formula.
Who needs to know about allergen cross contact?
Any caregiver, including babysitters, siblings, grandparents, extended family, friends, and teachers. Routine teaching of all caregivers about sources of cross contact and prevention of exposure is essential.
Things to Consider with Infants/Toddlers:
Children explore their environments with their hands and often put them, or other objects in their mouths. Younger children are more likely to put their hands in their mouths and noses, therefore caregivers should have increased awareness and wash their children’s hands often. Avoid sharing of food, utensils, water bottles and anything else that may go in their mouth, such as musical instruments.
Cross Contamination vs Cross Contact
Cross contamination occurs when microorganisms such as bacteria contaminate food and result in a food borne illness. Unlike cross contact, the risks of cross contamination may be eliminated with proper cooking techniques, whereas proper cooking does not reduce or eliminate the chances of a food allergy reaction.
Tips for Preventing Cross Contact When Serving and Preparing Food
Preparing
- Wash your hands with soap and water after coming into contact with any allergens.
- Talk to anyone who serves or prepares food for your child as they need to understand the concepts of cross contact.
- Keep allergen free foods away from other foods while they are being stored in the refrigerator or pantry.
- Do not allow children with a food allergy to share food, drinks, plate, cups, or utensils.
- When grocery shopping, store problematic foods in a separate bag in your cart.
- Avoid foods in bulk bins, the deli counter, and hot and cold salad bars as these are common sights for cross contact.
Cooking
- If possible, prepare allergen-free foods first and then prepare food for the rest of the family.
- Use separate utensils and serving spoons
- It is important to remember that allergens cannot be destroyed by cooking, frying or freezing.
- Avoid foods prepared on surfaces that cannot be cleaned in-between use, examples include deep fryer, deli slicer, seasoned wok, common grill surface.
Cleaning
- Carefully wash contact items and surfaces with soap and water or in the dishwasher before and after each use.
- Wipe down tables, highchairs, toys, pacifiers, menus, salt/pepper shakers or any other item your child could touch with their hands or put in their mouths.
- Do not rely on hand sanitizer products as they do not fully remove food particles.
Objects
Source | Examples | Ways to Avoid |
---|---|---|
Kitchen Utensils, Serving Spoons | Using a knife to spread peanut butter, not cleaning it properly, and then using it to spread jam. Serving mac and cheese, and then using the same spoon to serve green beans. | Wash utensils and serving spoons in the dishwasher or with soap and water in between each use. Use separate sets of serving spoons during meals for allergen vs non-allergen food items. |
Cooking Surfaces, Cutting Boards, Counter Tops | Cooking fish or shellfish on the same grill as steak. Scrambling eggs and then cooking a grilled cheese on same griddle. Cutting cheese and then fresh fruit on the same cutting board. | Clean grill surface with soap and water in between uses. Prepare the allergic child’s food first. Consider having separate cooking surfaces and cutting boards as allergen-safe. Clean counters with soap and water or commercial wipes before and after cooking. |
Deep Fryers, Cooking Oils, and Seasoned Wok | French fries that have been fried in the same oil as shrimp. Cooking allergen safe foods in a seasoned wok. | Avoid food cooked in a common deep fryer. Consider simple dished cooked on surfaces that are easily cleaned. |
Pots, Pans, Cooling Racks, Small Appliances | Making wheat bread in a bread pan, and then making gluten free bread. Blending a smoothie with cow’s milk, and then one with plant-based milk. | Clean properly in-between uses or designate specific pans and small appliances as allergen-free. Consider cooking the allergy-safe foods first. |
Saliva
Source | Examples | Ways to Avoid |
---|---|---|
Saliva | Kissing your child or cleaning their binky with your mouth after you eat a granola bar with allergens. Sharing toys, teething rings, pacifiers with other infants. Sharing utensils, cups, plates, water bottles, food, or drinks. Pets eat treats with milk and then lick child’s face, or babies eating dog food. | Do not share food, drinks, cups, plates or eating utensils. Wash properly or wipe down toys, pacifiers, teething rings regularly. Keep pet food and treats out of reach of children. |
Food
Source | Examples | Ways to Avoid |
---|---|---|
Airborne | Steam from cooking allergens, such as shellfish in a pot on the stove. Allergic child inhaling wheat, peanut, etc. flour while preparing baked goods. | Consider not cooking allergens that could travel through steam while the allergic child is home, or avoid these allergens in your home. Do not prepare or cook allergens in your home. |
Hands | Failing to wash your hands after handling nuts, and then preparing your child’s meal, or setting them up in their highchair. Siblings playing with a toy after eating allergen, and then handing it to allergic child. | Wash hands with warm water and soap before and after preparing each meal and setting up highchair. Regularly wipe down toys to decrease risk of exposure from child to child. |
Sponges, Dish Towels, Oven Mitts, Aprons | Used a sponge to clean a mac and cheese baking pan, and then the child’s sippy cup. Wiping hands on apron instead of washing them in between each task. | Considering using disposable wipes, or paper towels, or designating specific cleaning instruments for allergen free cookware, and dinnerware. Wash hands properly in-between tasks. |
Avoiding Cross-Contact While Dining Out
When dining out with a child who has food allergies, clear communication is key. Talk to the manager and/or chef, in addition to your server, to ensure that they understand your child’s needs. It’s best to avoid restaurants where there is a language barrier, and clear communication is difficult. If possible, call ahead and discuss your child’s allergy with a manager.
To minimize the risk of cross-contact, avoid ordering combination dishes like stews, soups, and sauces, as they often contain hidden ingredients and may have been prepared before your arrival. Fried foods, salad bars, and buffets are also common sources of cross-contact. Note that certain types of restaurants may be riskier for those with specific allergies (like an ice cream parlor for a child with dairy, peanut, or tree nut allergies), so research beforehand can help mitigate risks.
Finally, never share food that was not prepared specifically for your child with food allergies. The precautions taken in the preparation of your dish may not have been taken for others.