In the latest Vaccine Smarts column by UTMB’s Dr. Richard Rupp and Bridget Hawkins: There is no scientific, controlled clinical research that shows homeoprophylaxis prevents disease. In addition, there also is no evidence indicating that they have any impact on the immune system. This shouldn’t come as a surprise because the products essentially are just water. The explanations as to how homeopathic vaccines work don’t make scientific sense and are physically impossible.