[Influenza and cardiorespiratory events: a clinical-epidemiological review with a multidisciplinary point of view]

There is accumulating evidence showing that influenza infection and cardiorespiratory diseases are closely associated. Influenza has been described as a triggering factor capable of both exacerbate underlying chronic diseases as well as inducing the appearance of new respiratory and cardiovascular events. Consequently, influenza infection and its associated comorbidity have a significant impact on the health system. In this document, we extensively reviewed the current literature to describe the most relevant data on the relationship between influenza infection and cardiorespiratory diseases. Likewise, we analyzed the possible pathophysiological mechanisms explaining the connection between influenza infection and cardiac and respiratory events. Finally, reviewed data has been put into perspective to highlight the importance of influenza vaccination as an effective measure in the prevention of cardiorespiratory diseases, especially in the population with underlying chronic diseases.