I am posting this as this may be a topic of interest for some of you.
I was too nervous about giving DS the MMR so did single vaccines. My pead recommended the booster age 4.5yrs but as DS had the singles he recommended that we do the booster asap to ensure ds was covered as pead said some clinics who offered the single vacs didn't store the preparations properly etc (need to be in a fridge). So we decided upon the booster BUT my gp said he would do a blood test....! We did it very easily, gp was very persuasive and spoke about magic etc while ds had his eyes closed and we did use a numbing cream (was applied 45 mins prior to test). Anyway, blood was taken last Thursday and I am awaiting the results.
Will post as soon as I have them!!