Science Settled? 400 Scientific Studies Question Vaccine Safety and EfficacyVaccines: Are they safe? Are they effective? To help answer those questions is Neil Z. Miller, a medical research journalist and director of the Thinktwice Global Vaccine Institute. Miller has investigated vaccines for three decades and written several books on the subject, including: "Miller's Review of Critical Vaccine Studies: 400 Important Scientific Papers Summarized for Parents and Researchers." "Miller's Review" was created in response to the common refrain that "there are no studies showing vaccines are unsafe or ineffective." Miller States: "I've been doing the research for 30 years. I know of literally thousands of studies that document concerns. My books all document those studies."