Recently, an in vitro serum antibody test was marketed in Sweden for the diagnosis of this parasite. The test is reported to have a sensitivity of 83% and a specificity of 92% (Curtis, 2001). | Recently, an in vitro serum antibody test was marketed in Sweden for the diagnosis of this parasite. The test is reported to have a sensitivity of 83% and a specificity of 92% (Curtis, 2001). |