Efficacy of a cold-adapted, intranasal, equine influenza vaccine: challenge trials.
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D. Haines | P. Whitaker-Dowling | J. Youngner | H. Townsend | T. Chambers | J. Bogdan | R. Holland | T. Watts | R. Sebring | A. Cook | S. J. Penner | S. Griffin | H. G. Townsend