Lancet study links H1N1 vaccine to Guillain-Barré syndrome

A study published in The Lancet has associated a modest risk of Guillain-Barré syndrome with the H1N1 vaccine. The finding--which adds to reports from 2010--was drawn from 6 adverse event monitoring systems that oversaw the mass vaccination four years ago. About 1.6 excess cases of the syndrome were detected per million people vaccinated. At this level the benefits of vaccination far outweigh the risks, researchers said. Abstract I More