Hoping for some quick replies. DS3 has his 12m check up and vacc after lunch today but we've all been sick. Entire family has the flu and although DS3 is heaps better he still has a cough, the sniffles and his last temp was Monday. What's the go with vacc's while sick? I'm of the opinion that for a vaccine to work properly you need an immune system that is 100% but is that not the case for people?