Sore throats matter, and if your child has a sore throat then it is important that they get it checked out by their doctor or attend a throat clinic in your area.
To prevent other people in the family getting strep throat, you should make sure that everyone in the house with a sore throat gets checked by a doctor, as the germ can be transferred from person to person through 'saliva' e.g. sharing drinks or food. To prevent 'strep throat' spreading, people should cover their mouth when they cough or sneeze.