Vaccinations--Ellen White, Adventist History, and Medical Missionary Work (Indonesian Subt)

Dr. Joyce was interviewing Dr. Timothy Perenich, on his book about vaccinations and Adventist people. Even in the time of Mrs. White in 1800's, the serum was then introduced for smallpox and diphtery, whereas Mrs White ONLY used hidrotherapy (using water). This thing continue to develop till our time where populer prevention and medication are using vaccinations. Is it right? Let's see in this discussion.