MMRV booster shows no increase in seizure risk
A new study funded by the Centers for Disease Control and Prevention (CDC) in
America has confirmed that there is little to no risk that the measles, mumps, rubella and
chicken pox four in one causes fever related seizures in children between the ages of 4
by Louise-Anne Geddes, Mindful Mum, 2nd April 2012
The study, which will be published in Pediatrics journal in May and is expected to offer reassurance to parents. In 2008, a related study found that babies who received measles, mumps, rubella, and chickenpox in one shot had twice the risk for fever-related seizures as those who got two separate shots, measles-mumps-rubella in one and chicken pox in the other. Despite the low convulsion risk, the CDC still recommends that parents be educated about the increased risk.
The new study once again examined seizure risk from the MMRV injection, but this time looked at older children who were receiving the booster. 87,000 children between the ages of 4 and 6 who got the MMRV vaccine, and about 67,400 who got separate MMR and chicken pox vaccinations were included in the study. The researchers said they were ‘not surprised’ to find very few seizures in this age group, as such fever related seizures tend to occur in younger children. Only one related seizure was recorded 7-10 days after the MMRV group vaccination, and none in the MMR and chicken pox group
Photography: Alex Proimos @Flickr