Comparison of two O-serogrouping systems for mesophilic Aeromonas spp

Two O-serogrouping systems for mesophilic Aeromonas spp., National Institute of Health, Tokyo, Japan, and National Institute of Public Health and Environmental Hygiene, Bilthoven, The Netherlands, containing 44 and 30 reference strains, respectively, were compared. Nine strains in each system were considered identical. Thirty-four unique strains were identified, and 22 strains of the two systems were in an a,b-a,c type of relationship to each corresponding O group.