During the break Jeremy pulls out his snack that he had grabbed from his locker, he has packed two delicious fudge covered brownies. Naturally while ingesting such a delightful dessert the fudge on the brownies spread across Jeremy’s face and hands, after finishing his snack he licks his fingers clean. Unfortunately the bacteria contracted from the doorknob which transferred onto his hand has made its way inside of Jeremy's mouth, the mucus within Jeremy’s throat is unable to prevent this bacteria from entering his system. Jeremy has now been infected by the influenza virus!
As soon as the pathogen enters Jeremy's body, the macrophages travel through the bloodstream to the pathogen and attempt to engulf the virus through phagocytosis unfortunately the white blood cell is unsuccessful,