As with all science, they will ban it until they have the chance to totally corrupt it to render it useless. Blood and its fractions do carry risks, of HIV and hepatitis as well as compatibility issues. But, if the alternative is you die, it might be worth the risk. And the washtowel will impose guilt trips, even if they do not outright ban this. Naturally, they also lack things like supplements and social distancing (door to door, anyone?) that might throttle the virus enough to prevent the need for this potentially dangerous treatment in the first place (exposure to tiny amounts of the virus, plus decent supplements, could be as effective as vaccination in preventing major illness).
Speaking of vaccinations, they can work--if properly implemented. But I will not take any vaccinations that are created by big conglomerates that answer to some holding company or the reptilians that want this earth and our souls for themselves. Vaccines that contain mercury, formaldehyde, and other dangerous chemicals have no place in my body--and especially if they are mandatory (another sign that they are going to damage the body and soul). The only "vaccine" I need (aside my supplements) is controlled tiny exposures to the virus. This allows my immune system to respond before any infection can take place, while building immunity so that, when I get a full on exposure, it won't infect me either. That is what vaccines are supposed to do--not inflict brain damage.