Classification ● two species: ●L, Interrogans causes human or anima diseases callled leptospirosis According to the antigenic differences of LPs and superficial glycoproteins, L, interrogans can be divided into at least 24 serogroups and 200 serotypes oL biflexa Saprophytic, usually exists in water in nature.16 • two species: • L. interrogans • causes human or animal diseases called leptospirosis • According to the antigenic differences of LPS and superficial glycoproteins, L. interrogans can be divided into at least 24 serogroups and 200 serotypes • L. biflaxa • Saprophytic, usually exists in water in nature. Classification