After starting childcare, many families notice a sudden increase in illness.

It’s one of the most common concerns we hear:

“Will my child always be this sick?”

The reassuring answer is: no.

In fact, what your child is experiencing now is part of building a stronger, more resilient immune system for the future.

Building immunity—one exposure at a time

When children are young, their immune systems are still learning.

Each time your child is exposed to a common virus (like a cold), their immune system:

• Recognises the germ
• Learns how to respond
• Builds a memory to respond more effectively next time

This is how immunity develops over time.

The NHMRC Staying Healthy Guidelines explain that children in early education and care are often exposed to more infections because of close contact and shared environments—but this exposure is also part of how immunity strengthens  

Why it feels worse at the beginning

The first 6–12 months in childcare can feel particularly intense.

This is because:

• Your child is being exposed to many new viruses for the first time
• Their immune system has not yet built up familiarity with these germs
• Young children are still developing hygiene habits

Medical guidance highlights that this initial period often comes with more frequent illnesses, especially in infants and children under 3.

But this phase does not last forever.

What happens over time?

As your child continues attending childcare:

• Their immune system becomes more experienced
• They begin to get sick less often
• When they do get sick, it is often less severe and shorter in duration

Many families notice a significant improvement after the first year.

This is because the immune system has already “met” many of the common viruses circulating in early childhood settings.

Looking ahead to school and beyond

One of the long-term benefits of this early immune development is that children are often:

• Better equipped to manage common illnesses when they start school
• More resilient in group environments
• Able to recover more quickly from everyday infections

While no parent wants to see their child unwell, this stage is part of preparing their body for the wider world.

The Mother Duck perspective

At Mother Duck Childcare & Kindergarten, we understand that knowing the science doesn’t always make the moment easier—especially when your child is unwell.

Our approach is grounded in both evidence and care.

We recognise that:

• This phase can be challenging for families
• Each child’s experience is unique
• Support, communication and consistency matter

This is why we focus on creating environments and practices that not only support children when they are well—but also help reduce the spread of illness wherever possible.

A gentle reminder

If your child seems to be getting sick more often right now, it does not mean something is wrong.

It means their immune system is doing exactly what it is designed to do—

learning, adapting and growing stronger.

Coming next in this series

In our next blog, we’ll explore:

“How does Mother Duck support children’s health and reduce the spread of illness?”

We’ll take you inside our daily rhythms and rituals that support the well-being of every child, every day, every time.