The cold season is in full swing, so it is worth taking care of immunity not only in yourself, but especially in children, who are particularly vulnerable to viruses and infections. The immune system of toddlers under the age of 12 is not yet fully formed, hence a runny nose, hoarseness, a scratchy throat, a headache or a raised temperature are almost a certainty every autumn and winter. How can you effectively help your toddler fight off a cold and agonising sore throat?