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Flu vaccine production methods triggered seizures: CSL

Flu vaccine production methods triggered seizures: CSL 21 Jun 2012 Australian drug giant CSL has admitted its vaccine production methods probably triggered seizures in children, in the first results from its two-year investigation into the Fluvax fits. But CSL refused to say yesterday if it would pay compensation to the families of children hospitalised after being immunised with Fluvax, which has been banned for pediatric use after sending one in 100 children into febrile fits in 2010. The preliminary results of CSL's two-year investigation conclude that its manufacturing methods may have failed to fully split the viruses used to make flu vaccines. As a result, gene fragments and lipids from "inactivated virus" -- as well as "residual whole virus or clusters of both" -- may have created higher levels of immune-stimulating hormones, known as cytokines.