Hansen's disease is considered to be one of the well-known infections which upset serological tests for syphilis in patients in whom there has been no past or current treponemal infection. The reason why lepers are biological false positive (B.F.P.) reactors and why this failure in the specificity of lipoidal reactions occurs remains obscure. The frequency of false positive reactions is said to...

visceral leishmaniasis (vl) is a zoonotic disease caused by leishmania species. dogs are considered to be the main reservoir of vl. a number of methods and antigen-based assays are used for the diagnosis of leishmaniasis. however, currently available methods are mainly based on direct examination of tissues for the presence of parasites, which is highly invasive. a variety of serological tests ...

In her review of the current methods of laboratory diagnosis of Chlamydia trachomatis infections, Black (1) reported that serologic tests were generally not useful in the diagnosis of genital tract infection caused by C. trachomatis and that the presence of immunoglobulin M (IgM) antibodies was an unreliable marker of acute infection in adolescents and adults. Chlamydial infections during pregn...

Serological tests for syphilis (STS), as well as being important aids in the diagnosis of syphilis in man, are important in the study of experimental syphilis in animals. Rabbits not infected with Treponema pallidum sometimes show reactivity in one or another of the several available serological tests for the disease and, with the exception of the enzootic rabbit-spirochaetosis caused by Trepon...

H/STD FCTS H/STD FCTS H/STD FCTS H/STD FCTS H/STD FCTS H/STD FCTS H/STD FCTS H/STD FCTS Proper evaluation of serological test results in syphilis is often a confusing matter. Physicians are rarely confronted with problems in this regard. The following comments are provided as a matter of review. More extensive discussion may be found in the references listed at the end of this article. Several ...

In nearly all of the previous multicentre studies evaluating serological tests for Trypanosoma cruzi infection, sera samples from Central or South American countries have been used preferentially. In this work we compared the reliability of the serological tests using Mexican sera samples that were evaluated in four independent laboratories. This included a reference laboratory in Brazil and th...