Eli5 if disease’s want to live in a host’s body without being discovered, then why do they have such nasty symptoms that can be used to easily identify and destroy them?

Question

Eli5 if disease’s want to live in a host’s body without being discovered, then why do they have such nasty symptoms that can be used to easily identify and destroy them?

In: 106

Answer 1

Many good answers. But one more thing for your late-night thinking: how many diseases do you think you host right now, that just chill in your body without triggering any kind of symptom at all?