Here is a link on more information. This is one nasty bacterial infection. This vaccine is manufactured as part of the "Distemper" vaccine but more hospitals are now using the vaccine seperately from the DHPP vaccine.
http://www.cdc.gov/ncidod/dbmd/diseaseinfo/leptospirosis_g_pet.htm
Laura
Flash
and Ryu (we is both vaccinated for lepto yearly)