I had seperate MMR jabs for DS1. Have now changed my mind - can he have the combined booster or do I need to do seperate ones again?

[EdwardBear]

I decided on seperate jabs purely due to the risk of an Autism link (have close family members with Autism and didnt want to risk it).
Have pretty much decided to give DS2 the combined jab next month as findings have now refuted all links.

Can I give DS1 the combined booster after having seperate ones first of all or is there any reason why I need to keep it consistent?

no its fine for him to have the combined MMR as a booster.

We are in a similar situation when I looked into it it we decided that a booster probably wasn't necessary as I couldn't find anything which suggested that a booster would offer any more protection. Don't quote me on this as these figures may be wrong but from the information that I obtained it suggested that the first MMR is 90% effective and the booster pushes this figure up to 95%. Whereas the single vaccinations are 98% effective first time round.

There's no reason to stick with separate ones if you do want a booster.

Even if ForeverOptimistic's figure are right, a booster would still improve the probabilities.

If the first ones were 98% effective, that means 20 in 1000 children having them would not be protected. If the booster is 95% effective, then 95% of the missing 20 children would be protected by the booster, ie 19 out of the 20.