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Lopez M, Morales ML, Konana M, Hoyer P, Pineda-Reyes R, White AC, Garcia HH, Lescano AG, Gotuzzo E, Cabada MM. Kato-Katz and Lumbreras rapid sedimentation test to evaluate helminth prevalence in the setting of a school-based deworming program. Pathog Glob Health 2016; 110:130-4. [PMID: 27376503 PMCID: PMC4984960 DOI: 10.1080/20477724.2016.1187361] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
The sensitivity of the Kato-Katz test is suboptimal for the evaluation of intestinal helminth prevalence. Moreover, during mass deworming, as helminth egg burden decreases, the sensitivity is likely to decrease. The Lumbreras rapid sedimentation (Lumbreras) is a low-cost non-quantitative test, but may provide useful information in low burden areas. We compared the prevalence of intestinal helminth infections assessed by the Kato-Katz and the Lumbreras rapid sedimentation test on 3 stool specimens from each of 1083 children. The sensitivities were compared using the McNemar paired test. Using the combined outcome of the 3 different stool tests as the standard, Kato-Katz had lower sensitivity than Lumbreras rapid sedimentation tests for Ascaris lumbricoides (85.1% vs. 95.1%, p = 0.03), Hymenolepis nana (77.7% vs. 97.9%, p < 0.01), Trichuris trichura (41.7% vs. 100%, p = 0.01), hookworm (0% vs. 100%, p = 0.01), and Strongyloides stercoralis (0% vs. 88%, p < 0.01). Kato-Katz demonstrated significantly lower sensitivity, missing most T. trichiura, hookworm, and S. stercoralis infections. The combination of Kato-Katz and Lumbreras rapid sedimentation tests enables the detection of more intestinal helminths infections in post-deworming low prevalence areas.
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Affiliation(s)
- Martha Lopez
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center, Cusco, Peru
| | - Maria Luisa Morales
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center, Cusco, Peru
| | - Monisha Konana
- School of Medicine, University of Texas Medical Branch, Galveston, TX, USA
| | - Paige Hoyer
- School of Medicine, University of Texas Medical Branch, Galveston, TX, USA
| | - Roberto Pineda-Reyes
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center, Cusco, Peru
| | - Arthur Clinton White
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center, Cusco, Peru
- Infectious Disease Division, Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX, USA
| | - Hector Hugo Garcia
- Cysticercosis Working Group in Peru, Lima, Peru
- Faculty of Science and Philosophy, Infectious Diseases Laboratory Research-LID, Alberto Cazorla Talleri, Universidad Peruana Cayetano Heredia, Lima, Peru
- Cysticercosis Unit, Instituto de Ciencias Neurologicas, Lima, Peru
| | - Andres Guillermo Lescano
- School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru
- US Naval Medical Research Unit No. 6 (NAMRU-6), Lima, Peru
| | - Eduardo Gotuzzo
- Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Miguel Mauricio Cabada
- Universidad Peruana Cayetano Heredia and University of Texas Medical Branch Collaborative Research Center, Cusco, Peru
- Infectious Disease Division, Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX, USA
- Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
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