My DS is 3.10 and we have gone the singles vaccine route. However, with one thing or another happening we are really behind with the jabs so he's only had his single measles and rubella so far. He's having them done with DH2000 who tell me there's a mumps vaccine shortage so there seems uncertainty about if/when he'll get this vaccine. They did say he's priority because he's a boy etc. but I really don't want him going to school next September without having had it. Is anyon else in the same boat and kind of wishing they'd gone for the MMR now!