News - Focus on Bird Flu
How far "bird flu" virus has traveled down the evolutionary path to becoming a pandemic virus is unknown. Nor is it certain that the much-feared strain will ever acquire all the genetic features necessary for rapid, worldwide spread. Nevertheless, the similarities between the Spanish flu virus of 1918 and the H5N1 strain slowly spreading through Asia provide unusually concrete evidence of how dangerous the newer virus is.
Focus on Bird Flu