This supplement reports the characterization of 15 new Salmonella sero
vars recognized in 1997 by the WHO Collaborating Centre for Reference
and Research on Salmonella: 8 were assigned to S. enterica subsp. ente
rica, 4 to subspecies salamae, 2 to subspecies diarizonae, and 1 to su
bsp. houtenae. In addition, the antigenic factors H:z(85) and H:z(87)
are described and one modification to the Kauffmann-White scheme is re
ported.