A rational process is clearly needed and can be extremely helpful for selection, assessing and advancing TB vaccine candidates from entry into preclinical and clinical development and for advancing candidates from early safety and immunogenicity clinical trials to proof-of-concept and pivotal efficacy trials. A joint effort between Aeras and the Tuberculosis Vaccine Initiative has focused on the development of objective criteria for a number of key general vaccine characteristics which can be assessed at critical stages of development. In order to maximize development efficiency, increase likelihood of success, and optimize use of scarce resources, this process includes establishment of gates for moving TB vaccine candidates through progressive development stages based on meeting the established criteria for specific vaccine candidates.
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