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A Flu Pandemic Occurs | Influenza Virus Emerges
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A pandemic is a global disease outbreak. A flu pandemic occurs when a new influenza virus emerges for which people have little or no immunity, and for which there is no vaccine. The disease spreads easily person-to-person causes serious illness.
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Influenza | Influenza Virus | Causes Fever | The Flu
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Influenza is also called the flu. It's an infection that causes fever, chills, cough, body aches, headaches, and sometimes earaches or sinus problems. The flu is caused by the influenza virus. The flu is a drag, but it goes away in a week or two.
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