A National Park Service study has determined it impractical to implement the proposed brucellosis remote vaccination program for bison in Yellowstone National Park. Instead, biologists should continue administering the vaccine to bison calves and yearlings with a syringe. According to the final Environmental Impact Statement, the action alternatives, which would have implemented a remote vaccination program, were dismissed because of substantial uncertainties over vaccine effectiveness and delivery, the cost of a 30 year program, potential impacts to wildlife behavior and the visitor experience, and evaluation of public comments. Yellowstone National Park Superintendent Dan Wenk says park officials did not see the sense in spending millions of dollars for the thirty-year effort in hopes of a small reduction in the incidence of brucellosis in the bison herd. Wenk will use the findings of the final EIS in making a final recommendation to the National Park Service Regional Director who is to make the final decision by early spring.