Back to School: Making Sense of Recurring Colds

Why frequent colds are normal — and the red flags worth knowing.

Why does school seem to bring one cold after another?

The new term starts, and soon the sneezes begin. Children spend time close together, touch shared surfaces and encounter viruses they have not met before. Healthy children can get at least six colds a year; some get more, especially in group settings. Several separate infections can feel like one never-ending cold. [1]

How long is a normal cold?

A typical cold gradually improves, although a runny nose or cough can linger. Look at the overall pattern: is your child eating, playing and breathing comfortably between illnesses? A child who is otherwise growing well and recovering between episodes is usually less concerning than one who remains unwell. [1,2]

What can parents do?

Offer fluids, rest and saline nose drops or spray if appropriate. Teach children to wash hands, cover coughs and avoid sharing water bottles. Keep routine vaccinations up to date. Antibiotics do not treat the viruses that cause ordinary colds. Ask a clinician before giving cough-and-cold medicines to young children. [1,2]

When should you call the doctor?

Seek urgent care for difficult or fast breathing, blue lips, severe drowsiness or dehydration. Arrange a medical review for fever lasting more than three days, fever that returns after improving, ear pain, symptoms worsening rather than improving, or nasal symptoms lasting beyond two weeks. A baby under three months with fever needs prompt medical assessment. [1,2]

The takeaway

A string of school colds is common, not automatically a sign of weak immunity. Watch how your child is doing between illnesses and take breathing problems, prolonged fever or unusual tiredness seriously.