Pureblood. Being logical and more intelligent than a stump, I weighed the lethality of the disease, my age and health, against potential risks from a hastily developed vaccine. I saw nothing that persuaded me to undertake any unknown risk whatsoever for a very very modest risk from the disease. As things progressed, I never saw anything to persuade me that I had been incorrect in my initial evaluation and much to persuade me that I had been even more correct than I had known. Time has vindicated me, but it was not required. All information necessary for my decision was available from the start.