7 Steps That Prevent The Common Cold Or Flu DavidWolfe.comOctober 16, 2017 Prevention is key when it comes to cold and flu season. The flu is caused by Influenza A and B viruses. It's extremely contagious and often travels through scho... FamilyFlugoal settinghealthHealth & LongevityLifestyleRemediesResearchSelf-HelpSocial Commentary 3