autumnalis



History of serovar:

During an in investigation in September-October, 1922, in the Shizuoka Province of Japan, several leptospiral strains were isolated from blood samples taken from patients suffering from autumn fever (akiyami). Serological studies revealed that the strain designed Akiyami type A, could be differentited from icterohaemorrhagiae, hebdomadis and a strain known as Akiyami type B (Koshima et al., 1925).

Comparative studies by Schuffner on strains Akiyami A and Rachmat indicaterd that strain Akiyami A is the complete biotype of Rachmat (Schffner, 1939 and Gispen et al., 1939). In the list of 199 (WHO, 1959) the serovar appears as autumnalis "AB", but in the 1967 list (WHO, 1967), the serovar is named autumnalis, with reference strain Akiyami A.


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