title: Emerging influenza virus: a global threat.
abstract: Since 1918, in?uenza virus has been one of the major causes of morbidity and mortality, especially among young children. Though the commonly circulating strain of the virus is not virulent enough to cause mortality, the ability of the virus genome to mutate at a very high rate may lead to the emergence of a highly virulent strain that may become the cause of the next pandemic. Apart from the influenza virus strain circulating in humans (H1N1 and H3N2), the avian influenza H5N1 H7 and H9 virus strains have also been reported to have caused human infections, H5N1 H7 and H9 have shown their ability to cross the species barrier from birds to humans and further replicate in humans. This review addresses the biological and epidemiological aspects of influenza virus and efforts to have a control on the virus globally.
authors.affiliation: Department of Respiratory Virology,VP Chest Institute, University of Delhi, Delhi 110 007, India. madhukhanna@hotmail.com
authors.forename: M
authors.initials: M
authors.lastname: Khanna
authors.forename: P
authors.initials: P
authors.lastname: Kumar
authors.forename: K
authors.initials: K
authors.lastname: Choudhary
authors.forename: B
authors.initials: B
authors.lastname: Kumar
authors.forename: V K
authors.initials: VK
authors.lastname: Vijayan
mesh_terms: D000818:Animals; D001717:Birds / Q000821:virology; D021821:Communicable Diseases, Emerging / Q000188:drug therapy / Q000453:epidemiology* / Q000517:prevention & control / Q000821:virology; D004196:Disease Outbreaks / Q000517:prevention & control; D006801:Humans; D007194:India / Q000453:epidemiology; D053124:Influenza A Virus, H5N1 Subtype / Q000472:pathogenicity; D007252:Influenza Vaccines; D005585:Influenza in Birds / Q000635:transmission; D007251:Influenza, Human / Q000175:diagnosis / Q000188:drug therapy / Q000453:epidemiology* / Q000517:prevention & control; D009975:Orthomyxoviridae / Q000276:immunology / Q000472:pathogenicity*; D011159:Population Surveillance
chemical_list: D007252:Influenza Vaccines