Flu vaccine found to cut deaths by 19%-not 50%
Claims than the influenza vaccine can cut mortality by 50% are not supported by the evidence, according to Canadian researchers.
Their study estimated the reduction in mortality in 700 patients hospitalised for community-acquired pneumonia outside the normal winter flu season.
They found after adjustment for confounding factors, those who had previously received the flu vaccine had a 19% decreased risk of dying compared with matched controls.
Am J Respir Crit Care Med 2008; 178 527-33