I thought that I was over the FLU, when I got it again.
It turns out that it can mutate (evolve) between hosts which is not usually a problem.
It becomes a problem in our home, because there are 6 people living in a 3 bedroom household. I had no idea that it would strike again, but apparently, according to my research, we must kill the airborne version using whatever we can, and keep away from contact with eachother.
In my opinion, the worst thing about it is the fever, which I can take care of using ICE water and Acetaminophen, which is Tylenol (Though other names include, depending on your country... Panadol, Mapap, Ofirmev, Apap, Mejoralito, Feverall, Acephen, Xl-dol, Aypanal, Nortemp, Aphen, Ringl, Tempra, Bf-paradac)
Still sick, kill by not allowing it to spread, and using airborne agents.