I believe it is more severe when you're young, but norovirus is something which people tend to catch multiple times as they grow up, building more and more of an immunity. So basically, your immune system is just more ready for it than other illnesses, and so it can fight it very quickly.
knyghtmaireA66 t1_j1vpdu1 wrote
Reply to Why are norovirus symptoms so short-lived? by SuiSca
I believe it is more severe when you're young, but norovirus is something which people tend to catch multiple times as they grow up, building more and more of an immunity. So basically, your immune system is just more ready for it than other illnesses, and so it can fight it very quickly.