Combined vaccine doubles seizure risk in children

June 9, 2014 5:46 PM

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Combining two common childhood vaccines into one — rather than administering them separately — doubles the risk of febrile seizures in children, a study published in the Canadian Medical Association Journal has found.

Febrile seizures — convulsions brought on by fever in infants or young children — are a rare side effect of measles-mumps-rubella vaccine, occurring at a rate of less than two seizures per 10,000 doses. When the MMR vaccine is combined with the vaccine against chickenpox, creating the MMRV (for vari...

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