What to do in time of pandemic: should parents delay introduction to allergens?


No, don’t delay. Introduce allergens as soon as you offer solids to baby. There are more benefits than risks in introducing early the allergens, even in time of pandemic.

Delaying might put your baby at higher risks of allergies, while introducing early has been shown to prevent allergies. It is very rare that babies will show signs of life-threatening allergic reactions upon the first ingestion of a new food.

So in most cases, even when there is an allergic reaction, it won’t require a trip to the emergency room. If your baby is having a severe allergic reaction, call 911, and go to the nearest emergency room. Even in time of covid19 and the pandemic, you need to seek medical help. The risk of getting covid19 is very low when infection control measures are taken like in hospital settings.

Read more on the topic here: Peanuts, eggs and your baby: How to introduce food allergens during the coronavirus pandemic

The Canadian Pediatric Society also recommends early introduction of allergenic foods to babies, even during the pandemic. Read more here: Can we continue to recommend early allergenic food introduction during a pandemic?


The 2019 updated recommendations on early introduction of allergens to prevent allergies in babies: don’t delay offering the top allergenic foods to baby


The Canadian Pediatric Society (CPS), Canada’s national pediatric association, released in early 2019 a new position statement on the best time for introducing allergenic foods to babies.

New 2019 Guidelines on Early introduction of allergenic foods


Introducing solid food allergens as early as 4 months: new research and new recommendations


The new CPS statement aligns with Health Canada’s official recommendations from 2013-2014 (view here).

But since the release of these Health Canada’s guidelines 5 years ago, a number of high quality clinical trials on infant food allergies have been completed.

From this new knowledge, the CPS has put forth clearer directions on how to safely introduce allergenic foods like peanuts and eggs, for which we have the strongest evidence.

The latest evidence suggests that early food introduction, between 4-6 months of age, prevents the development of food allergies later on.

Health Canada suggests the same thing, but is less “directive” in their recommendation, with a general statement to not delay introduction to allergens.

While Health Canada’s recommendation applies to all babies, the CPS new statement specifically applies to high risk infants…but we believe that most parents should be aware of the latest science!


Canadian Pediatric Society 2019 Early Introduction of Allergenic Foods


Food allergy prevalence and infants at high risk


Prevention is a major public health goal, as estimates suggest up to 10% (self reported allergy prevalence = 7.5%) of the population is affected by food allergies.

What are “food allergies”? Which foods does that include?

In theory, any food CAN cause an allergic reaction. 

However, this refers to the common Canadian food allergies in children:
• Peanut
• Egg
• Cow’s milk
• Wheat
• Soy
• Fish/shellfish
• Tree nuts (including almonds, Brazil nuts, cashews, macadamia nuts, pecans, pistachios, pine nuts, and walnuts)

There is no consensus among practitioners, researchers and international associations and authorities on the exact profile of a child at “high risk” for allergies.

The CPS provided a two-part definition to guide us.

  1. Does your child have a first-degree relative (meaning a sibling or parent) with “atopy” which includes eczema, food allergies, allergic rhinitis, and asthma?
  2. Does your child have a personal history of atopy, including eczema?

If you’ve answered “Yes” to these questions, you can probably consider your child to be at high risk; something you should confirm with your doctor.


Delaying solids past 6 months should be avoided


At risk or not, all babies should begin the introduction of allergenic foods as soon as they start eating solid foods.

Not sure how to introduce these allergens to your baby?

We got you covered with this simple guide with ideas of food and ways to introduce each of them.


Even after an allergenic food is successfully introduced without a reaction, you need to maintain your baby’s oral tolerance by frequently offering it frequently.

For example:

Once your baby has been introduced to eggs and you know s/he is not allergic, it is important to keep offering eggs regularly.

This can be done either in recipes, or as is. Consider offering eggs on 2-3 occasions per week, as you progress with other foods.

This way your baby’s body knows that this is a regular food and that their is no need to react and generate an allergic reaction.


What about the old recommendation of introducing one new food at a time?


Except for common food allergens, there is no need to introduce one new food at a time, nor wait 3 days before offering a new one.

First, because at that rhythm your child wouldn’t eat a variety of food until s/he reaches puberty!

Second, it over-complicates the whole process without offering additional benefits.

There is no scientific evidence supporting a benefit of introducing one food at a time. The exception is the list of food allergens above. Introducing these individually will allow you to identify any foods guilty of causing an allergic reaction.

So yes, do introduce one allergen at a time. Mornings are ideal so you can monitor baby’s reaction throughout the day.

Remember to offer the allergenic food several times per week.

If baby is not reacting, move on to the next allergen without delaying. In the meantime, build on your progress and offer all sorts of age- and texture-appropriate foods to baby.

When an allergen is successfully introduced, keep offering it as you test another allergens to maintain tolerance.

When you decide to introduce solid foods (even if it’s a dab of peanut butter in breastmilk), remember the importance of repeated exposures to maintain your baby’s oral tolerance.


Food allergies in breastfed babies


There are different ways to minimize food allergy risks in babies, and the timing of solid food introduction is one of them.

But, let’s not forget the importance of exclusively breastfeed for 6 months.

Breastmilk is an excellent way to minimize allergy risk, and should be encouraged for a multitude of other reasons.

For baby’s that aren’t at a high risk of allergies, there is no scientific evidence supporting solid food introduction before 6 months of age.

In this case, maintenance of exclusive breastfeeding is more important.

If your baby is at high risk of allergies, it might be worth having a discussion with your doctor/allergist (expert in allergy management) and your dietitian (expert in infant feeding) to see what the best approach is.


Early introduction of allergens versus breastfeeding exclusively


This will help clarify when food allergens should be introduced for your baby specifically: 6 months? 5 months? 4 months?

It’s important to weigh the benefits of exclusive breastfeeding against the risks of waiting before introducing food allergens.

You also have to consider your family’s reality, and your child’s specific needs.

The benefits of breastfeeding, including allergy prevention, are clearly mentioned in the CPS statement, and we love that!

Breastfeeding exclusively for about 6 months, and continued until 2 years of age (or more) is encouraged for all the benefits for mother and baby!


Signs baby is ready for weaning: beyond allergy prevention


Let’s put this in perspective: allergies are only one aspect of your child’s health.

We totally understand that it is scary and concerning, and we all want to avoid food allergies because it can be life-threatening.

It can also be a lot to manage, but it isn’t impossible; many parents manage like pros and their kids thrive and are happy!

Preventing allergies is not the only reason to dictate the timing of solid food introduction.

There are many more factors to consider, and the signs of readiness of your child to solid foods should always be observed.

We cover this topic in detail, in a previous post.

The most important part of the CPS statement is to let yourself be guided by your baby!

In an ideal world, all the signs would be clearly shown by your baby on his/her 6 month birthday. It would make our recommendations easier, but that is not real life!

We suggest you focus on the signs of readiness rather than the age of your baby.

Trust your baby to show you when s/he is ready for solid foods, and trust yourself as a parent to work with your child.


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One thing we all agree on: don’t delay introducing allergenic foods to babies


There is overwhelming evidence now that delaying the introduction of allergens is not a good idea. It does not reduce the risk of food allergies.

In fact, it may actually have the opposite effect and increase the risk that your baby has an allergic reaction.

So as soon as baby is eating, get going with the allergens!

There is probably also another aspect where we all agree: don’t rush the introduction of solid foods before 4 months.

It is clear in the CPS statement: “not before an infant is 4 months of age”.

Baby is not physiologically ready to manage (mouth) and digest (gastrointestinal tract) food yet.

Breastmilk, if possible, is really the best choice for baby until you see signs of readiness for solids around 6 months of age.


OK, so what should I do with my child?


For children not at a high risk for food allergies: introduce food allergens as soon you introduce solid foods, around 6 months of age, but really when your baby show signs of readiness.

Don’t introduce food before 4 months of age, unless you’ve been specifically told so by your health care team who have assessed your child.

For children with a complicated medical history, history of food allergies in the family, or if you are nervous about introducing allergens, get in touch with your doctor/allergist and a dietitian to see what is the best approach.

For all children, don’t delay introducing allergenic foods. Note: preterm babies and babies with medical conditions; see with your health care team.

When baby is eating solids, s/he should be eating allergens.

In the meantime, if you have any questions or comments, please contact us so we can help you!


Canadian Pediatric Society. Timing of introduction of allergenic foods:

Government of Canada. Infant Feeding:

Peanuts, eggs and your baby: How to introduce food allergens during the coronavirus pandemic


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