Kathy Hancock.

Kathy Hancock, Ph.D http://aygestin.org/side-effects-of-aygestin.html ., Vic Veguilla, M.P.H., Xiuhua Lu, M.D., Weimin Zhong, Ph.D. Butler, M.P.H., Hong Sunlight, M.D., Feng Liu, M.D., Ph.D., Libo Dong, M.D., Ph.D., Joshua R. DeVos, M.P.H., Paul M. Gargiullo, Ph.D., T. Lynnette Brammer, M.P.H., Nancy J. Cox, Ph.D., Terrence M. Tumpey, Ph.D., and Jacqueline M. Katz, Ph.D.: Cross-Reactive Antibody Responses to this year’s 2009 Pandemic H1N1 Influenza Virus On 11 June, 2009, the global world Health Organization declared an influenza pandemic was under way. The 2009 2009 pandemic H1N1 virus includes a unique mix of genes from both UNITED STATES and Eurasian swine lineages which has not really been identified previously in either swine or individual populations.1,2 The hemagglutinin gene of 2009 H1N1 is one of the classical swine lineage, which was 1st introduced into swine populations around 1918 and shares antigenic similarity with triple reassortant swine influenza viruses which have circulated in pigs in the usa for greater than a decade; these strains have been associated with sporadic individual disease.2-4 The 2009 2009 H1N1 hemagglutinin is antigenically and genetically distinctive from hemagglutinins of contemporary individual seasonal influenza H1N1 viruses but has greater similarity to the swine H1N1 influenza virus that caused an influenza outbreak among military recruits in Fort Dix, NJ, in 1976.2,5 This outbreak resulted in a national vaccination campaign in which approximately 45 million people were vaccinated.6 Little is known approximately the known level of preexisting immunity to 2009 H1N1 in humans, one of the determining elements for susceptibility to a novel influenza virus.