A study published in Pediatrics suggests that children who get a combination of measles, mumps, rubella, and chickenpox vaccines in one shot (the MMRV) are at a somewhat increased risk of getting a fever-related seizure, compared with children getting two separate shots – one containing measles, mumps and rubella (the MMR) and the other containing the chickenpox (the Varicella) vaccine.

Although the risk of such fever-related seizures is low, occurring in 1 out of 1,000 doses if a child receives the MMR and the Varicella shot separately, the risk doubles to 1 in every 500 doses if the child receives the combined MMRV shot.

So what is the benefit of the combined MMRV vaccine? Ease of administration, according to the CDC. I think I’ll chose being inconvenienced – and inconveniencing the doctor – over potentially giving my child a seizure.

Check out CNN for more information.