On April 2, the nurses started my first round of five intravenous immunoglobulin (IVIG) infusions. The clear IV bags hung on a metal pole above my head, their liquid trickling down into my vein. Each of those ordinary-looking bags contained the healthy antibodies of over a thousand blood donors and cost upwards of $20,000 per infusion. One thousand tourniquets, one thousand nurses, one thousand veins, one thousand blood-sugar regulating cookies, all just to help one patient.