[Serological analysis of two complex Salmonella respectively Arizona O-groups (Salmonella O:48 and O:64 - Arizona O:5 and O:29) with the object of combining them into one Salmonella O-group 48 within the Kauffmann-White-schema (author's transl)].

In 1963 KAUFFMANN divided O-group Y (= O:48) of the KAUFFMANN-WHITE-Schema into 3 sub-groups, e.g. 481, 482 - S. dahlem; 481, 482, 483 - S. djakarta; 481, 483, 484 = Citrobacter no. 2624/36. He also recommended the use of the two serotypes S. dahlem and S. djakarta for the preparation of a diagnostic group-serum. At that time, serological relations- especially O-antigenic relations (and even some identities) - between the separate Salmonella and Arizona genera were known, viz. between the Salmonella group 0:48 and the Arizona group O:5. It has now been found that there exist also close serological relations between the Salmonella O-groups 48 and 64 on the one hand and to the corresponding Arizona O-groups 5 and 29 on the other hand, in connection with which the special factor 484 defined by KAUFMANN in the Citrobacter culture no. 2624 embraces the whole Salmonella group O:64 (= Arizona group O:29). Therefore, every Salmonella O:64 strain and Arizona O:29 serotype respectively can be agglutinated with factorserum 484, defined by KAUFFMANN. A special O:64 serum is no longer required. The Salmonella antigen 64 (Ar. 29 or 5.29) has a rule the partial antigens 481, 483, 484 (= Ar. 5,29). Only a few serotypes do not possess factor 483; their components are 481 and 484 (= Ar. 29). The evidence of our findings demonstrates that the Salmonella O-group 64 (= Arizona 29) should be combined with O-group 48 (Ar. 5) and erased from the original Kauffmann-White-Schema and the Arizona Antigenic Schema to avoid a wrong diagnosis.