The vax for rota virus is relitively new. My guess is those numbers may not be up to date.
DD2 had rota virus at 6 months old & ended up in hospital. She was sicker with that than with any other stomach bug my kids have had.
DS was vaxed against it. He had no side effects. I had him done as I was scared of him getting it, but DD1 never had it. I'm not even sure how DD2 got it, she was around primary school aged kids, but none of them were sick & if it came home with DD1 I'd think she'd have gotten sick too.