What are the symptoms of the common cold and how can you treat it?

The common cold is a viral infection that affects the upper respiratory tract, including the nose, throat, sinuses, and windpipe. It is caused by a variety of viruses, including coronaviruses and rhinoviruses, and is highly contagious. The symptoms of the common cold usually appear one to three days after exposure to the virus and can last for up to two weeks.
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