I would like to share a helpful tip that has been very effective for myself and others who follow it faithfully.
Carry HAND SANITIZER in your car and use it EVERY TIME and I mean EVERY TIME you get in the car after shopping, pumping gas, or doing anything in public. Also if you like, gently inhale some of the alcohol rub from your wet hands into your nostrils as a sort of vapor disinfectant.
Is this effective ? I have not had a cold, sore throat or flu in 4 years since starting to do this as a faithful practice without fail.
Most of my friends report a similar decrease. They used to average getting sick 2-3 times per year, now average LESS than once per year !
Michael Spitzer- Author - FITNESS AT 40,50,60 and BEYOND