Abstract
Advanced age is associated with an increase in morbidity and mortality from influenza. Immunization is the best option to protect individuals against influenza and its complications. Older people are less likely than their younger counterparts to mount an appropriate immune response to influenza vaccines. The adjuvanted inactivated influenza vaccine quadrivalent (aIIV4) is designed to elicit a more robust immune response in older people compared with traditional inactivated influenza vaccines. The aIIV4 is indicated for active immunization against influenza caused by influenza virus subtypes A and types B contained in the vaccine and is licensed by the Food and Drug Administration for use in persons 65 years of age and older. The aIIV4 should be administered by intramuscular injection. Like other influenza vaccines, aIIV4 carries a warning regarding the occurrence of Guillain-Barré syndrome. The most common adverse reactions associated with aIIV4 are injection site pain, fatigue, headache, arthralgia, and myalgia.
Published Version
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