I had the unfortunate chance of getting an acute norovirus infection on New Year's Day 2006. I was in the ICU for 17 hours before I was able to go home (actually, they needed the ICU, and there were no other beds...so I had to leave.) But, I seriously thought that I might die. Luckily, I recovered fully in about 10 days, but, the ICU doctor told me that a child or older person might not have survived.
I'm very sorry about your experience! And I'm glad you survived the disease! Yes, I hear some old people died from the virus, and that it is likely occurs in nursing homes, etc.
We can protect ourselves from this virus by being a little careful with our life.