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How long can influenza type B last?

Diana Meeks
Diana Meeks on behalf of Sigma Nursing
Family Practitioner

The first symptoms of influenza (flu) virus B, including fever, chills, headache and body aches, often begin to go away after about 2 or 3 days. In some cases, these symptoms will last 5 days or longer. The respiratory symptoms of influenza virus B, such as coughing, throat irritation and congestion may last for days or weeks. However, most people are not contagious after about a week from the beginning of symptoms.

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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.