Fig. 3From: Epizootiological investigation of equine herpesvirus type 1 infection among Japanese racehorses before and after the replacement of an inactivated vaccine with a modified live vaccineVN antibody titers of 4-year-old horses at the beginning of each epizootic period. VN titers were measured for serum samples collected from 4-year-old horses (n = 50, each period) in mid-November in each epizootic period, and were expressed as GM titers. The significant difference (P < 0.05) between the grouped periods is indicatedBack to article page