The Venereal Disease Research Laboratory test (VDRL) is a screening test for sexually transmitted infection – syphilis caused by the spirochete bacterium Treponema pallidum. It is a non-treponemal test, which detects antibodies IgM and IgG … Read more
Laboratory diagnosis of Syphilis caused by Treponema pallidum Specimen Samples collected from ulcers and lesions should not be contaminated with blood, microorganisms, or tissue debris. Polymerase chain reaction (PCR) samples … Read more
Pathogenesis of Treponema pallidum The two major routes of transmission of Treponema pallidum are sexual and transplacental. Sexual exposure to a person who has an active syphilitic chancre carries a … Read more
