And while you lie in your bed and feel horrible, it is important to remember that the symptoms you feel are mostly created by your own immune system to clear out the infection. If these countermeasures are used too freely, your immune system can do immense and terrible damage to you, much worse than even the influenza A virus could do. So there is an intense need to downregulate the immune response again, to have it strike with just the exact amount of vigor, and to shut it down as soon as it is not needed. To get back to homeostasis
