has gone into the development of the trial vaccine and the thoroughness thor-oughness with which if is being tested for safety attest to the cautio nthat guides the administration adminis-tration of this program. In commending this polio vaccine vac-cine trial to the citizens of Utah for their full support and complete com-plete cooperation, we are mindful, mind-ful, of the endorsements this program pro-gram has from leading medical organizations, such as the Amer-1 ican Academy of Pediatrics, the' advisory committee of the Asso-1 ciation of State and Territorial i Health Officers, and the special advisory commit tee on active immunizations of the National Foundation for Infantile I'araly-1 sis. George A. Spendlove, M.D. o POLIO VACCINE JNDORSED Cognizant of the fact that the forthcoming polio prevention trial is the culmination of many years of medical research, and recognizing the significance of Utah's selection as one of the sites for this program, Dr. Frank K. Bartlett, president of the Utah State Medical Ass'n, Dr. George A. Spendlove, director of public health, and Dr. Louis P. Gebhardt, professor of bacteri-'ology, bacteri-'ology, U. of U., heartily endorse the project and welcome this opportunity op-portunity to volunteer their services ser-vices for this history-making event. The objective of this study is to determine the effectiveness of ; a trial polio vaccine in protect-j ing children against paralytic I polio. The vaccine has been proven pro-ven to be safe by every possible test. Over 5,000 children have been vaccinated to date and the only reaction has been a mild case of hives in one child. The Component Medical Societies and other agencies connected with this program are in full j favor of these trials. j The residents living in the' eiglit participating counties (Box Elder, Cache, Carbon, Davis,! Emery, Salt Lake City, Salt Lake County, and Weber) are urged to avail themselves of the opportunity oppor-tunity offered to receive this vaccine. vac-cine. The intensive research that