SAN DIEGO, May 21, 2009 (GLOBE NEWSWIRE) -- Vical Incorporated (Nasdaq:VICL) announced today that in the two weeks since launching its program to develop a vaccine against H1N1 influenza (swine flu), the company has completed development of a prototype H1 vaccine, produced an initial supply of research-grade material, and initiated immunogenicity testing in animals. Assuming a successful outcome of this testing and a commitment for program-specific external funding, the company is ready to advance directly to large-scale cGMP manufacturing of vaccine for human clinical trials to be conducted by the U.S. Navy.