ds1 reacted to mmr as a baby but was fine on all the others, not even a temp. Cant remember what was wrong with him, nothing awful, just what is expected. Is her more likely to react to the preschool booster he is due because he did to the original mmr?
Im only asking as ds2 is due the mmr aswell and there is the 3 week window with regards to them getting poorley from it and be sods law they both be ill at same time..