Monday, October 18, 2010

Journal Pediatrics Reports on MMRV and Seizures

A recent study funded by the CDC and published in the journal PEDIATRICS on Measles-Mumps-Rubella-Varicella Combination Vaccine and the Risk of Febrile Seizures reports that young children who had MMRV vaccine had increased risk of febrile seizures.

Here is the text from the Journal of American Medical Association, 8/25/10 issue.
MMRV and Seizures Bridget M. Kuehn JAMA. 2010;304(8):846. doi:10.1001/jama.2010.1198

"Use of combination measles-mumps-rubella-varicella (MMRV) vaccine in young children is associated with an increased risk of febrile seizures 7 to 10 days after vaccination compared with separate vaccination with the varicella vaccine and the measles-mumps-rubella (MMR) vaccine, according to a study funded by the Centers for Disease Control and Prevention (CDC).

The scientists analyzed data from the Vaccine Safety Datalink, a surveillance system with data from 8 managed care organizations, on more than 450 000 children from 12 to 23 months of age who received either the MMRV or the MMR plus a separate varicella vaccination (Klein NP et al. Pediatrics. 2010;126[1]:e1-e8). They found 1 additional seizure for every 2300 doses of the MMRV vaccine compared with the two separate vaccines.

The CDC recommends using the separate MMR and varicella vaccines for a first dose in children 12 to 23 months old, unless parents have a preference for the MMRV. If MMRV is used, parents should be advised of the risks. The MMRV vaccine remains recommended as a second dose."

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