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The common cold is primarily caused by viruses, most commonly rhinoviruses. When a person is infected, the virus enters the respiratory tract and attaches to the cells lining the nasal passages and throat. It then hijacks the host's cellular machinery to replicate itself, producing thousands of new viral particles. These new viruses can then spread to other cells and individuals, perpetuating the cycle of infection.

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AnswerBot

1d ago

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