Experimental infection of cliff swallows (Petrochelidon pyrrhonota) with varying doses of West Nile virus - Oesterle, P.T.; Nemeth, N.M.; VanDalen, Kaci; Sullivan, H.; Bentler, K.T.; Young, G.R.; McLean, R.; Clark, L.; Smeraski, C.; Hall, Jeffrey (American Journal of Tropical Medicine and Hygiene, 2009)