Why do colds occur in the winter?

Why do colds occur in the winter?

You can catch a cold any time of year, but it’s more likely during colder months. In winter, people stay indoors and are in closer contact with each other.

A recent study in mice suggests cold temperatures may also affect your immune system’s response. Researchers found that when cooler air lowered nose temperature, mouse immune systems had a harder time stopping the rhinovirus from multiplying. The same may be true in humans.