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There are rapid field tests for influenza A that can be used by doctors to confirm the presence of an infection by a Type A influenza virus in a matter of minutes. Medical professionals rely on evaluation of symptoms and history of exposure as well as known presence of the disease in the community more often than laboratory testing. If there is a need to know that you have a specific flu virus, such as Swine Flu or avian flu, there are a few labs, like those at the US Centers for Disease Control and Prevention (CDC) that can perform those types of lab studies. Usually that is not necessary since most all forms of the influenza virus are treated the same way.

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Q: How do you know you have flu A?
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