The majority of symptoms caused by disease and the vast majority of the damage caused to your body as a result of disease, is in reality, caused by your own body's immune system when fighting off infection.
Oh and the fact that Archduke Ferdinand survived the first assassination attempt on his life, but was later killed after accidently riding by a sandwich shop, on his way to the palace, that the leader of the failed assassins had gone to get lunch. He spotted the Archduke and shot and killed him. How's that for a laugh? For want of a sandwich, WW1 was started, which led to WW2, which led to the cold war which led to the present day political climate as we know it. All because a failed assassin wanted to get a sandwich and the archduke rode by at that exact moment.
Oh and the fact that Archduke Ferdinand survived the first assassination attempt on his life, but was later killed after accidently riding by a sandwich shop, on his way to the palace, that the leader of the failed assassins had gone to get lunch. He spotted the Archduke and shot and killed him. How's that for a laugh? For want of a sandwich, WW1 was started, which led to WW2, which led to the cold war which led to the present day political climate as we know it. All because a failed assassin wanted to get a sandwich and the archduke rode by at that exact moment.