Epidemiology of Hookworm Infection in Kintampo North Municipality, Ghana: Patterns of Malaria Coinfection, Anemia, and Albendazole Treatment Failure

Debbie Humphries School of Public Health, Yale University, New Haven, Connecticut; Department of Pediatrics and Program in International Child Health, Yale University School of Medicine, New Haven, Connecticut; Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana; Jordan Institute for Families, School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Kintampo Rural Health Training School, Kintampo, Ghana; Department of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana

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Emily Mosites School of Public Health, Yale University, New Haven, Connecticut; Department of Pediatrics and Program in International Child Health, Yale University School of Medicine, New Haven, Connecticut; Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana; Jordan Institute for Families, School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Kintampo Rural Health Training School, Kintampo, Ghana; Department of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana

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Joseph Otchere School of Public Health, Yale University, New Haven, Connecticut; Department of Pediatrics and Program in International Child Health, Yale University School of Medicine, New Haven, Connecticut; Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana; Jordan Institute for Families, School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Kintampo Rural Health Training School, Kintampo, Ghana; Department of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana

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Welbeck Amoani Twum School of Public Health, Yale University, New Haven, Connecticut; Department of Pediatrics and Program in International Child Health, Yale University School of Medicine, New Haven, Connecticut; Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana; Jordan Institute for Families, School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Kintampo Rural Health Training School, Kintampo, Ghana; Department of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana

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Lauren Woo School of Public Health, Yale University, New Haven, Connecticut; Department of Pediatrics and Program in International Child Health, Yale University School of Medicine, New Haven, Connecticut; Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana; Jordan Institute for Families, School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Kintampo Rural Health Training School, Kintampo, Ghana; Department of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana

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Hinckley Jones-Sanpei School of Public Health, Yale University, New Haven, Connecticut; Department of Pediatrics and Program in International Child Health, Yale University School of Medicine, New Haven, Connecticut; Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana; Jordan Institute for Families, School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Kintampo Rural Health Training School, Kintampo, Ghana; Department of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana

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Lisa M. Harrison School of Public Health, Yale University, New Haven, Connecticut; Department of Pediatrics and Program in International Child Health, Yale University School of Medicine, New Haven, Connecticut; Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana; Jordan Institute for Families, School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Kintampo Rural Health Training School, Kintampo, Ghana; Department of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana

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Richard D. Bungiro School of Public Health, Yale University, New Haven, Connecticut; Department of Pediatrics and Program in International Child Health, Yale University School of Medicine, New Haven, Connecticut; Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana; Jordan Institute for Families, School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Kintampo Rural Health Training School, Kintampo, Ghana; Department of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana

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Blair Benham-Pyle School of Public Health, Yale University, New Haven, Connecticut; Department of Pediatrics and Program in International Child Health, Yale University School of Medicine, New Haven, Connecticut; Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana; Jordan Institute for Families, School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Kintampo Rural Health Training School, Kintampo, Ghana; Department of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana

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Langbong Bimi School of Public Health, Yale University, New Haven, Connecticut; Department of Pediatrics and Program in International Child Health, Yale University School of Medicine, New Haven, Connecticut; Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana; Jordan Institute for Families, School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Kintampo Rural Health Training School, Kintampo, Ghana; Department of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana

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Dominic Edoh School of Public Health, Yale University, New Haven, Connecticut; Department of Pediatrics and Program in International Child Health, Yale University School of Medicine, New Haven, Connecticut; Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana; Jordan Institute for Families, School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Kintampo Rural Health Training School, Kintampo, Ghana; Department of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana

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Kwabena Bosompem School of Public Health, Yale University, New Haven, Connecticut; Department of Pediatrics and Program in International Child Health, Yale University School of Medicine, New Haven, Connecticut; Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana; Jordan Institute for Families, School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Kintampo Rural Health Training School, Kintampo, Ghana; Department of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana

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Michael Wilson School of Public Health, Yale University, New Haven, Connecticut; Department of Pediatrics and Program in International Child Health, Yale University School of Medicine, New Haven, Connecticut; Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana; Jordan Institute for Families, School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Kintampo Rural Health Training School, Kintampo, Ghana; Department of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana

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Michael Cappello School of Public Health, Yale University, New Haven, Connecticut; Department of Pediatrics and Program in International Child Health, Yale University School of Medicine, New Haven, Connecticut; Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana; Jordan Institute for Families, School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Kintampo Rural Health Training School, Kintampo, Ghana; Department of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana

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A cross-sectional pilot study of hookworm infection was carried out among 292 subjects from 62 households in Kintampo North, Ghana. The overall prevalence of hookworm infection was 45%, peaking in those 11–20 years old (58.5%). In children, risk factors for hookworm infection included coinfection with malaria and increased serum immunoglobulin G reactivity to hookworm secretory antigens. Risk factors for infection in adults included poor nutritional status, not using a latrine, not wearing shoes, and occupation (farming). Although albendazole therapy was associated with an overall egg reduction rate of 82%, 37 subjects (39%) remained infected. Among those who failed therapy, treatment was not associated with a significant reduction in egg excretion, and nearly one-third had higher counts on repeat examination. These data confirm a high prevalence of low-intensity hookworm infection in central Ghana and its association with poor nutritional status. The high rate of albendazole failure raises concern about emerging resistance.

Author Notes

*Address correspondence to Debbie Humphries, Epidemiology of Microbial Disease, Yale School of Public Health, 60 College Street, PO Box 208034, New Haven, CT 06520, E-mail: debbie.humphries@yale.edu or Michael Cappello, Yale Child Health Research Center, 464 Congress Avenue, New Haven, CT 06520, E-mail: michael.cappello@yale.edu.
†These authors contributed equally.

Authors' addresses: Debbie Humphries, Yale School of Public Health, New Haven, CT, E-mail: debbie.humphries@yale.edu. Emily Mosites, Tennessee Department of Health, Communicable and Environmental Disease Services, Nashville, TN, E-mail: Emily.Mosites@tn.gov. Joseph Otchere, Kwabena Bosompem, and Michael Wilson, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana, E-mails: JOtchere@noguchi.mimcom.org, KBosompem@noguchi.mimcom.org, and wilsonmi@who.int. Welbeck Amoani Twum, Rural Health Training School, Ministry of Health, Kintampo B/A, Ghana, E-mail: watbeckat@yahoo.com. Lauren Woo, Lisa M. Harrison, Blair Benham-Pyle, and Michael Cappello, Yale Child Health Research Center, New Haven, CT, E-mails: laurenwoo13@gmail.com, lisa.harrison@yale.edu, bbenhampyle2010@gmail.com, and michael.cappello@yale.edu. Hinckley Jones-Sanpei, School of Social Work, University of North Carolina, Chapel Hill, NC, E-mail: jonessan@email.unc.edu. Richard D. Bungiro, Department of Molecular Microbiology and Immunology, Providence, RI, E-mail: Richard_Bungiro@Brown.edu. Langbong Bimi and Dominic Edoh, Department of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana, E-mails: lbimi@ug.edu.gh and dedoh@ug.edu.gh.

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