Novel strategies for prevention and treatment of influenza

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Abstract
Influenza viruses continue to be a major health challenge due to antigenic variation in envelope proteins and animal reservoirs for the viruses. Of particular concern is an anticipated influenza pandemic in the near future. Vaccination is currently the most effective means of reducing morbidity and mortality during influenza epidemics. In addition, neuraminidase inhibitors have substantially improved antiviral therapy for influenza. However, influenza infection in children and the elderly remain problematic. Furthermore, major innovations in prevention and therapy will be needed to deal with an influenza pandemic. This review assesses available and investigational antivi-rals and vaccines for influenza, emphasising novel approaches that may improve ability to cope with infection in children and the elderly or during a pandemic. Some adverse sequelae of influenza appear to relate to impairment or pathogenic activation of immune responses. Exciting recent findings in this area, with relevance to influenza t...