Abstract
Influenza is a severe acute viral respiratory illness that affects the upper respiratory tract and lungs and is caused by seasonal, pandemic, or variant viral strains. Although seasonal influenza is usually self-limiting, it is a significant cause of mortality in the elderly, children under 2 years old, and at-risk populations. Pandemic and variant influenza strains also result in increased mortality. Primary care nurse practitioners have an important role in the prevention, recognition, and management of influenza. This article provides a current, evidence-based overview of influenza, including its pathophysiology, epidemiology, transmission, prevention, diagnosis, and treatment.
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