Reminder for DS's MMR booster came through recently. Now I've had all my 3 children vaccinated up till now. 2 of them completed their preschool courses and it's just DS's MMR booster left now I think. It wasn't an informed decision, I just used to do it because they said to. After reading more Mumsnet threads about vax I am now hesitating about going for the booster. The "vax for herd immunity" argument to me now seems quite weak because I've looked at HPA stats for past years and realised the UK's never achieved the 95% vax takeup rate for herd immunity to take place, so does it mean herd immunity has never existed here? Also DS has some kind of rash that has been spreading across his limbs. It looks like the same sort my eldest had since she was a baby. The GPs always said it was eczema, and prescribed lots of creams but nothing seems to get rid of it. Eldest also has selective mutism. I'm not sure what to make of this but we have a strong family history of allergies. So I am inclined to not take him for it. Does vaxing really decrease the chances of complications in the event he catches the illness? And do you think this rash that comes and goes by itself without any obvious reason could be a sign of autoimmune disorder?