Assuming DD2 won't get ill this weekend, is it worth getting the jab as she has, most likely, been exposed? I'm all for the vaccine but she's had 2 other jabs in the last 3 months, is due her MMR booster next month and has just recovered from a cold... DD1 (5) started with a cold as well, then a cough for a couple of days and since yesterday, high fever and achy all over.