You can go on steroids like Prednisolone, and other things like sudafed PE they worked for me only had it 1 days full day, then just a cold the second and 3rd day Plus this thing about oh its not the flu unless your in bed for 4 days rah rah rah is a load of crap, its only a figure i only had mine for a good day, and yes it was the flu.
There are strong drugs out there that can help fight it if you got it you just need to know what ones to get. Zinnat 250, Augmentun, Ceclor, Prednisolone, or the usual cold and flu will do the trick, Then there is the herbal stuff that does work, Garlic, Spices, Hot foods, And Zinc, Vit C, What else..Oh and drink plenty of water, even better isotonic drinks gaterade, powerade, at least those will provide essential fluids/salts for the body at the same time.. Not only is it, the flu itself has an incubation period, most times of upto a week, But no matter what its a chance thing as well, Prevention is one way, but you could simply touch that hand rail press that lift button, touch that seat, then eat that food, handle money, and well the list goes on. Shit bloody happens, get over it... Why dont we all where masks AND rubber Gloves hell just bubble us up scotty, Common Sense people.
Not only Clarrification on one thing alone which determines all this, "HUMAN BEHAVIOUR" You cant tell everyone stay home wash your hands blah blah blah, as if they are going to listen, Plus money doesnt make it self, groceries dont just arrive Free on your door step. And no matter what there is always going to be 1 person around you to spread it ALWAYS where ever you go.
Oh oops i forgot closing statement, I once heard there are like 2600 different strains of colds and flu, but only a few are killers,
Good luck with that...