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How do viral infections affect the body?

Viruses affect the body by attacking your cells. They can cause mild to severe symptoms. Viruses can affect only certain cells in your body, like those of your upper respiratory system, causing common cold symptoms. They can affect your whole body, such as with an influenza virus, leaving you with all over muscle soreness and fever. Sometimes a virus can attack your nervous system causing serious illness.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.