If your children were sick with it, it is much harder to protect yourself because I am sure you stayed with them while they were getting sick. If so, that creates the aerosol spray which you likely inhaled in. I don't have children, but I have a nephew who spends a lot of time at our house. I bought a box of masks, the same ones you see on TV when there is an outbreak of some new virus. I have them mounted on the wall inside the closet in front of my bathroom. This ensures that IF my nephew were to become ill at my place, I can be there for him and not have to worry about aerosol contamination.

Daycare centers are notorious for Norovirus, mainly because children are too young to understand the concept of germs and there is nothing you can do to prevent those germy little hands from spending half the day in their mouths. So, your best bet, would be to prepare yourself and your home for the off chance it does occur. If you wear a mask while tending to your sick child, and be sure to clean the bathrooms and other common areas, wash your clothes and your childs clothes on heavy duty, and never put your hands in your mouth, it is quite literally impossible to contract it.

Also, I want to remind you that yes, the Dad may have an sv*, but there are other viruses that cause v*. They are all considered "Norwalk Type Viruses", but they aren't Norovirus. While these are often harder to catch and only make up a very small percentage of illness causing v*, it is very likely that he has something different. Maybe he ate a steak and got e coli. It is impossible to know, so just follow a strict sanitation process and you will be golden.

@Jason A bit of info on the vaccine. First round of human trials has ended and proved successful, HOWEVER, to an emet, the results are definitely not successful. Let me explain. In the first human trials they proved that the vaccine they are currently testing DID decrease the number of participants who got sick after being exposed to Noro, HOWEVER, most of them still got it. While it cut down transmission by about 50%, that is not a great number when it comes to vaccines. Another important part was that they did discover that those who were exposed, given the vaccine, and got sick, had much less severe symptoms than those who got the placebo vaccine.

So, for me, it sounds promising and I'd definitely get it, even if it only reduced my chances by 50%, but unless those numbers grow significantly, I fear that once it is given to the general public, our quality of life is not going to change much. Unless the vaccine protects you 100% of the time, we will all continue to live in fear.

Also, it is NOT being released in 2014. As of now the company is beginning their second human trials has stated that it will be ready for the general population by 2015 IF their results continue to rise. Because the numbers weren't nearly where they wanted them to be, they've begun testing two other versions of a vaccine in hopes that they will test better than the first. Either way, I think we will see a vaccine that protects us in our lifetime, however, I highly doubt it'd ever be 100% protection. I think it will be much like the flu shot. The flu shot doesn't protect you 100%, it simply reduces your chances of catching it, and if you do catch it, it reduces the severity of symptoms. I think that is about all we have to hope for. Yes it will help us chill out a bit, but not completely.