Viral Infection: Influenza or Flu

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Influenza or "flu" is a rather contagious viral infection that infects the respiratory tract. Fever, cough, muscle aches, fatigue, rhinorrhea, and sore throat are the symptoms commonly associated with influenza virus. Individuals infected with influenza normally experience mild illness and recover within two weeks. However, specific groups, such as the elderly, young children, and individuals with co-morbidities, appear more susceptible to severe illness as well as mortality due to influenza related complications. H1N1, a causative agent of influenza was identified in spring of 2009. Communication of H1N1 and seasonal influenza occur through droplets created when individuals with the illness cough, sneeze, or talk. Indications of H1N1 include the symptoms associated with seasonal influenza but with the addition of diarrhea. Several key differences exist between H1N1 and seasonal influenza. Transmission of H1N1 transpires outside of the defined influenza season, which is October through May. Though the elderly are more vulnerable to seasonal influenza, young adults are more likely to be affected by H1N1. Hence, a shift in age groups affected by influenza and influenza like illness (ILI) is a critical indicator of the agent responsible for the alteration (Laine, Williams, & Trexler, 2009).
The 2009 H1N1 pandemic affected more than 150 countries, with an alarming 182,166 laboratory confirmed infections and approximately 1,800 deaths. As a result of this pandemic, vaccination costs and benefits were examined. It was determined that earlier vaccination is the basis for prevention of influenza associated mortality during the fall. Furthermore, increases in earlier vaccination practices was proven quite cost effective. Influenza vaccin...

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