Both my children had full MMR jab. It’s not too much all in one go. It wouldn’t be available in this day and age if there was any real clinical evidence it leads to any serious adverse side effects. This attitude is why the uptake is so poor. Advancements in medicines and vaccines is one of the key reasons, along with hygiene, diet and lifestyle of course, that many enjoy old age into their late 80s and 90s. The NHS does not fund medicines lightly. Any medicine deemed worthy and beneficial enough to be provided free at the point of use by our NHS should be gladly received by those eligible. Ignoring your health risks puts individuals at risk, the wider population at risk and greater strain on the overall health economy. So please make sure that have any vaccinations and treatment that you are entitled to have for the sake of everyone.