I remember clear as day my grandmother (in the U.S.) would wipe down each soda can with a soapy sponge then dry it before opening it. She'd then pour it into a glass for us to drink. We weren't allowed to drink straight from the can. I notice here in Buenos Aires, a lot of kiosks used to give straws to anyone who bought a can/bottle to drink. I still wipe the tops of any cans I get, to this day and some other packaging I suspect could have been housed in unsanitary conditions. As these diseases show up in broader populations, guess it's always good to brush up on hygiene measures.
I'd also like to bring back the ol' habit of covering up our mouths while coughing/sneezing. The number of sick folks I see looking like death, walking around like zombies as they heartily wet-cough AT everyone in their periphery is astounding. Especially on public transportation and airplanes. Que asco!