SAN DIEGO, Feb. 4, 2013 (GLOBE NEWSWIRE) -- Vical Incorporated (Nasdaq:VICL) today announced the publication of a new article1 in the journal Vaccine detailing results from the company’s completed guinea pig studies with the company’s Vaxfectin®-formulated plasmid DNA (pDNA) vaccines against herpes simplex virus type 2 (HSV-2). These results, along with previously published results from mouse studies, support the company’s decision to advance toward clinical testing, which is expected to begin in the second half of 2013.