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The Disease Influenza, known more commonly as "the flu," is caused by the influenza virus, which infects the respiratory tract (nose, throat, and lungs). Unlike many other viral respiratory infections, such as the common cold, the flu can cause severe illness and life threatening complications in many people. (more about the symptoms and way it's spread) The Immunization Two types of influenza vaccine are now available: inactivated (or killed) vaccine and live attenuated (or weakened) vaccine.The inactivated influenza vaccine is given as a shot and has been used in the United States for many years. The attenuated vaccine, licensed in 2003, is given as a nasal spray. It is licensed by the Food and Drug Administration (FDA) for healthy children and adults from 2-49 years of age. (More about the immunization and side effects) Vaccine Recommendations
Quick Facts - What You Need to Know
Pandemic Influenza Resources
Other Resources
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