There's a norovirus vaccine which just completed stage 1 trials[0]. Cool part about it is that it isn't an injection, just a pill you swallow.
It is worth noting that norovirus and rotavirus aren't the only common "stomach bugs" but being immune against both is still a big win.
edit: Just want to add, I'm not dissing on this research. The more separate efforts there are for a safe effective norovirus vaccine the less likely they are to ALL fail. I've just been watching this space closely because I want to be the first in line when someone's vaccine ships.
[0] http://outbreaknewstoday.com/norovirus-vaccine-oral-tablet-p...
