Hand washing!!!! Wash frequently, rinse and repeat. Scrub under nails and keep them short. Put paper towels in the bathrooms and kitchen, instead of cloth towels. Wipe down their backpacks with a disinfectant wipe each afternoon and try to wipe down door handles, keyboards and light switches. The kids can help. Bring sanitizer in the car.
Moisturize!!!! Keep their hands and faces, especially around their noses and lips well moisturized. This prevents cracking which creates additional entry points for germs. It is good to moisturize the entire body, as well. Contact me if you need recommendations for great products.
We get flu shots, but that is personal.
Check the web, there are lots of amazing articles.
Bon voyage, N.