Additional Salmonella Serotype: Salmonella enteritidis ser. Madigan (44:c:1,5)

The antigenic composition of a new Salmonella type (44:c:1,5) isolated from the stool of an infant is described.     

A new Salmonella serotype isolated in Canada:Salmonella sherbrooke (16:d:1,6)

A new Salmonella serotype classified in the Kauffman sub-genus I (Kauffman 1963) has been isolated in Canada from a stock of cacao beans from Nigeria. Salmonella sherbrooke shares the antigenic structure 16:d:1,6.     

Immunochemical studies of Salmonella Dakar and Salmonella Telaviv O-antigens (serogroup O:28)

Salmonella Dakar and Salmonella Telaviv bacteria belong to serogroup O:28, which represents 107 serovars and possesses only the epitope O28. Salmonella Telaviv has the subfactors O28(1) and O28(2) , whereas S. Dakar has O28(1) and O28(3) . So far, only limited serological and immunological information for this serogroup is available in the literature. Knowledge of the structures of their O-polysaccharides and the immunochemical investigations performed in this work allowed to reveal the nature of subfactor O28(1) as attributed to the presence of 3-linked (or 3,4-disubstituted) α-d-GalpNAc in the main chains of S. Dakar and S. Telaviv O-polysaccharides. An explanation for the cross-reactions between Salmonella enterica O28 O-antigens and other Salmonella O-polysaccharides and their structural similarity to Escherichia coli O-serogroups is also given.