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How soon do flu symptoms develop after being exposed to a virus?

Influenza, or the flu, is a viral disease of the respiratory tract—the nose, throat, bronchial tubes and lungs. The flu is highly contagious and is spread though airborne droplets of moisture produced when someone with the flu coughs or sneezes. When you breathe in these germs, you may come down with the flu, generally within one to four days of being exposed.

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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.