Hailu A., Schoone G.J., Diro E., Tesfaye A., Techane Y., Tefera T., Assefa Y., Genetu A., Kebede Y., Kebede T., Schallig H.D.F.H.
Institute for Pathobiology, Addis Ababa University, Jimma Road, Addis Ababa, Ethiopia; Faculty of Medicine, Addis Ababa University, Addis Ababa, Ethiopia; Koninklijk Instituut voor de Tropen, KIT Biomedical Research, Department of Parasitology, Meibergdreef 39, 1105 AZ Amsterdam, Netherlands; Gondar University, Gondar, Ethiopia; Kahsay Abera Hospital, Humera, Tigray Regional State, Ethiopia
Hailu, A., Institute for Pathobiology, Addis Ababa University, Jimma Road, Addis Ababa, Ethiopia, Faculty of Medicine, Addis Ababa University, Addis Ababa, Ethiopia; Schoone, G.J., Koninklijk Instituut voor de Tropen, KIT Biomedical Research, Department of Parasitology, Meibergdreef 39, 1105 AZ Amsterdam, Netherlands; Diro, E., Gondar University, Gondar, Ethiopia; Tesfaye, A., Gondar University, Gondar, Ethiopia; Techane, Y., Kahsay Abera Hospital, Humera, Tigray Regional State, Ethiopia; Tefera, T., Kahsay Abera Hospital, Humera, Tigray Regional State, Ethiopia; Assefa, Y., Kahsay Abera Hospital, Humera, Tigray Regional State, Ethiopia; Genetu, A., Gondar University, Gondar, Ethiopia; Kebede, Y., Gondar University, Gondar, Ethiopia; Kebede, T., Faculty of Medicine, Addis Ababa University, Addis Ababa, Ethiopia; Schallig, H.D.F.H., Koninklijk Instituut voor de Tropen, KIT Biomedical Research, Department of Parasitology, Meibergdreef 39, 1105 AZ Amsterdam, Netherlands
A fast agglutination screening test (FAST) for the detection of Leishmania antibodies in human serum samples was evaluated under harsh field conditions in northern Ethiopia. Test performance was compared with a standard serological test, namely the direct agglutination test (DAT), and with parasitology. In total, 103 suspected cases were recruited for the study. Based on parasitological examination, 49 patients were confirmed of having visceral leishmaniasis (VL) and the other 54 suspected cases were parasitologically negative. Field evaluation of FAST was possible in blood samples of 89 patients. FAST had 4 false negative results and 13 false positive results. DAT had 2 false negative results and 20 false positive results. A good degree of agreement (86.9%) was observed between FAST and DAT (κ value 0.73). In this field-based evalauation, the sensitivity and specificity of FAST were found to be 91.1% (95% CI 77.9-97.1) and 70.5% (95% CI 54.6-82.8), respectively, compared with 95.3% (95% CI 82.9-99.2) and 62.3% (95% CI 47.9-74.9) for DAT. FAST had a high predictive value of a negative test, demonstrating that FAST could be utilised to exclude rapidly non-VL patients from a large population of suspects with fever and splenomegaly in endemic areas. © 2005 Royal Society of Tropical Medicine and Hygiene. Published by Elsevier Ltd. All rights reserved.