The problem is that cold and flu viruses mutate so rapidly that sometimes they're unrecognizable to the antibodies created by the body in response to any particular vaccine.
While H5N1 is difficult for humans to catch, experts fear it could mutate into a form that spreads easily among people, sparking a deadly flu pandemic.
These regions mutate less rapidly, and in fact, in the recent study in mice, published in the current issue of Nature Structural Molecular Biology, they did not mutate at all.
New Approaches to Understanding Infection May Uncover Novel Therapies Against Influenza The influenza virus' ability to mutate quickly has produced new, emerging strains that make drug discovery more critical than ever. For the first time, researchers have mapped how critical molecules regulate both the induction and resolution of inflammation during flu infection. The results are published this month in the journal Cell.
July 3, 2013 - Newswise
Ed Royce in Reuters I have been under recording contracts for 18 years and have watched the business radically mutate from one thing to something inherently very different, and it gives me great pleasure to be able to finally have a direct relationship with the... Trent Reznor http://www.google.com/url?q=http://en.wikipedia.org/wiki/Trent_Reznor&source=dictionary&usg=AFQjCNF_lEKE1w2bho7PLZHlOoDCR_4Vxw BusinessWeek http://www.google.com/url?q=http://www.businessweek.com/bwdaily/dnflash/content/oct2007/db2007109_120106.htm%3Fchan%3Dtop%2Bnews_top%2Bnews%2Bindex_businessweek%2Bexclusives&source=dictionary&usg=AFQjCNESfNcV4Eu2qiNJuaD1JpbDTdNmtA Oct 9, 2007
66156 87951 mutate I voted against the bailout of AIG, and I wrote an editorial at the time, 'Bailout Plan could Mutate Into a Gravy Train of Tax Money,'" Royce said. "Well it has."