Vaccine Survey Tables (image) American Osteopathic Association Share Print E-Mail Caption The survey also asked Americans to choose a statement that best represented their feelings about vaccine safety and efficacy. While the vast majority (82%) chose in favor of vaccines, 8% selected responses expressing serious doubt. An additional 9% said they were unsure. Credit American Osteopathic Association Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.