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Strep throat

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Introduction
A sore throat is normally a symptom of a bacterial or viral infection, such as the common cold. In around a third of cases, no cause for the sore throat can be found.
Causes of a sore throat
A sore throat is often just one symptom of a bacterial or viral infection, such as the common cold.
Symptoms of a sore throat
Symptoms and signs of a sore throat include: swollen tonsils (two small glands found at the back of your throat, behind the tongue).
Treating a sore throat
Sore throats are not usually serious and the condition often passes in three to seven days. There are some treatments you can use at home to relieve your