Wash my hands, wash my hands, WASH MY HANDS!!!

Seriously people, unless you're very old or very young or have a SEVERELY compromised immune system (active HIV, etc.), this isn't anything to get into a tizzy about. You could get sick as hell and THINK you're gonna die, but probably you won't. We have public health protocols, which they didn't have in 1918, and we have antivirals, which they didn't have in subsequent flu epidemics.

Honestly. The best way to avoid infections of ALL KINDS is to wash your hands thoroughly.