Homeoprophylaxis:
A system for treating disease based on the administration of minute doses of a drug that in massive amounts produces symptoms in healthy individuals similar to those of the disease itself. [The Free Dictionary]
Noted in “Napa doctor arrested for selling fake COVID-19 vaccines, immunization cards, DOJ says,” Liz Kreutz, Amanda del Castillo and Kayla Galloway, ABC7 News:
Juli A. Mazi, a licensed homeopathic doctor, allegedly sold homeoprophylaxis immunization pellets that she said contained COVID-19. She allegedly told the victims that the immunization would create an antibody reaction in the immune system.
Or just call it quackery and be done with it.