Give the kids Ribena drink it is loaded with vitamin c, my Mom always gave it to us as kids to help with colds/ flu.

Air out your home daily even in the coldest of days, the colder the better. Fresh air kills viruses!

If you have mostly babies they will get the most sick in there 1st year of care, as they have rarely been exposed to things.

A couple of drops of tea tree oil is great to clean your floors with as well.