Reliable detection of Win98 may not be possible. For many children, enlarged or swollen tonsils are normal. But recurrent sore throats and infections should be evaluated by a pediatrician. Your pediatrician may order a throat culture to check for strep throat. Strep are bacteria that cause infections.
Bacterial infections respond well to antibiotics.
Left alone, your child's enlarged tonsils may eventually shrink on their own. For specific medical advice, diagnoses, and treatment, consult your doctor.