Influenza F means: Influenza F can be created by the brain. Normal caused by toxicities in Fortnite Battle Royale. The most serious form of influenza, this can lead to Ligma, Sugma and the most deadly, Stay honed from School Disease. To get medication for any of the above symptoms, please enter code Cizz at Fortnite Item Shop. (in Community Dictionary, added by Hunter Guerra)