ATCC 43642 replaces ATCC 23581 as the type strain of Leptospira interrogans (Stimson 1907) Wenyon 1926. Opinion 91. Judicial Commission of the International Committee on Systematics of Prokaryotes.

The Judicial Commission affirms that, according to information presented to it, the type strain of Leptospira interrogans (Stimson 1907) Wenyon 1926 designated on the Approved Lists of Bacterial Names (ATCC 23581) has been shown not to represent an authentic culture of strain RGA (a member of the serovar Icterohaemorrhagiae) and ATCC 43642, derived from an authentic strain of strain RGA, a member of the serovar Icterohaemorrhagiae, is designated the type strain of Leptospira interrogans (Stimson 1907) Wenyon 1926.