The medical articles you refer to are I might point out between 16 and 40 years old .
A lot has changed since then in the world.
Yup, first of all you wash the kids (now using non-touch soap dispensers) then they fall over so you wipe their hands (with an alcohol wipe that you carry in a disposable plastic bag) then they come in (and get washed again still using the non-touch soap dispenser) then they eat their dinner (off plates washed in a dishwasher that almost reaches autoclave temperatures) then, just before bed they get hit by the soap again (yup, probably from the same non-touch soap dispenser)
Then what happens? They go down with every bug or virus that's known to man!
When I was a kid I ate worms! Very rarely was I ill.
There is a reason I have to wear gloves and sterilise everything but maybe I will just give my mirror a wipe on my shirt the next time another woodwind player comes in?!