Autumnalis serogroup - 1923

It was decided at the TSC meeting in Boston in 1982 (Minutes 1984) to divide this group into 3 separate groups; Autumnalis, Djasiman, and Louisiana.
In the new Autumnalis group the serovar Sumatrana was omitted as it was serologically indistinguishable from Bulgarica. Serovar Butembo has been transferred provisionally from the Cynopteri serogroup to the Autumnalis group as its relationship with serovars within this group appears stronger. If in the future new strains are isolated with serological affinity to Butembo, it is possible that they may be considered as constituting a separate serogroup. In the Revised List of 1988 the serogroup Autumnalis was extended by the addition of the following serovars: Alice, Mujunkumi, Weerasinghe, Carlos, Srebarna, Lambwe, and Bim. The Chinese serovar Nanla is added to the enclosed updated list. However, the serovar status of Nanla has not yet been confirmed by a RL. By rechecking the original literature dealing with serovars Alice and Weerasinghe it was discovered, after the list of 1988 was published, that no descriptions had been given for either serovars. They will therefore have to be removed from the main list and placed within the Annex.
Moreover, discrepant typing results have also been reported for serovar Alice.
With these omissions and the addition of Nanla the group now contains 14 serovars.
* Kmety E., Dikken H.: Revised List of Leptospira Serovars (accepted by the Subcommittee on the Taxonomy of Leptospira). University Press Groningen, 1988, p. 16.

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