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| Life-long flu vaccine - successful trials |
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Scientists attempting to produce a single vaccine that could give life-long protection against all types of influenza say that they have produced promising results in human trials. If successful the vaccine, made by Acambis, would protect against all strains of influenza A - the cause of pandemics. Currently vaccines have to be regularly redesigned because the influenza virus keeps changing. The new vaccine would overcome this and could be stockpiled in advance of avian influenza outbreak, say experts. The US trials show that the vaccine is safe and it works fast to make antibodies against a small molecule on the surface of the influenza virus, however, it remains to be shown that this will be protective. Previous animal studies have indicated that the vaccine may protect against severe illness and death but not against infection. Acambis say that their scientist are now working to perfect the formulation before conducting larger human trials. Content Updated ( Friday, 18 January 2008 ) |