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What is a cold?

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In brief: The cold

The runny nose, sore throat or bunged up feeling of a cold is caused by one of many viruses that infect the upper part of the breathing system (upper respiratory tract).
Although a cold can make you feel miserable, in most people they are self limiting. This means the body fights off the infection and cure comes without the need for specific medical treatment.

In brief: The cold

The runny nose, sore throat or bunged up feeling of a cold is caused by one of many viruses that infect the upper part of the breathing system (upper respiratory tract).
Although a cold can make you feel miserable, in most people they are self limiting. This means the body fights off the infection and cure comes without the need for specific medical treatment.
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