DS got it first, it was 24 hours later that DD went down then it was only about 4 hours later that I had it. DH got it 48 hours later.
My parents also got it, some of us had only diarrohea but me and the children had vomitting too.
I was the worst out of the lot of us though, but mine also got better the quickest.
Do you have it just now?