Hope they weren’t too poorly with it. I think because it’s not ‘a serious’ illness people forget that it is bloody unpleasant for those affected. The work/school/childcare issue is huge and so difficult to negotiate. From what I’ve read, it’s a very safe vaccine and was developed in the 70s. I think the argument against it (which hasn’t been properly backed up) has been it leading to increased risk of chickenpox and shingles in older people.