Tonsillitis, a common throat infection in which the tonsils become inflamed, can be either viral or bacterial and treated with antibiotics.

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This animation shows where the tonsils are in the child's throat. Tonsillitis is a type of throat infection in which one or both tonsils become inflamed and swell up. The child will have a sore throat and difficulty swallowing. The cause of the disease may be either viral or bacterial. If the cause is bacterial, the child will be treated with antibiotics.