HYPERENDEMIC HUMAN AND PORCINE TAENIA SOLIUM INFECTION IN PERÚ

HÉCTOR H. GARCÍA Departments of Microbiology and Pathology, Universidad Peruana Cayetano Heredia, Lima, Perú; Department of Transmissible Diseases, Instituto Nacional de Ciencias Neurologicas, Lima, Perú; Departments of International Health and Biostatistics, Johns Hopkins University School of Hygiene and Public Health, Baltimore; Asociacion Benefica PRISMA, Lima, Perú; School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Lima, Perú; Parasitic Diseases Branch, Centers for Disease Control and Prevention, Atlanta.

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ROBERT H. GILMAN Departments of Microbiology and Pathology, Universidad Peruana Cayetano Heredia, Lima, Perú; Department of Transmissible Diseases, Instituto Nacional de Ciencias Neurologicas, Lima, Perú; Departments of International Health and Biostatistics, Johns Hopkins University School of Hygiene and Public Health, Baltimore; Asociacion Benefica PRISMA, Lima, Perú; School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Lima, Perú; Parasitic Diseases Branch, Centers for Disease Control and Prevention, Atlanta.

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ARMANDO E. GONZALEZ Departments of Microbiology and Pathology, Universidad Peruana Cayetano Heredia, Lima, Perú; Department of Transmissible Diseases, Instituto Nacional de Ciencias Neurologicas, Lima, Perú; Departments of International Health and Biostatistics, Johns Hopkins University School of Hygiene and Public Health, Baltimore; Asociacion Benefica PRISMA, Lima, Perú; School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Lima, Perú; Parasitic Diseases Branch, Centers for Disease Control and Prevention, Atlanta.

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MANUELA VERASTEGUI Departments of Microbiology and Pathology, Universidad Peruana Cayetano Heredia, Lima, Perú; Department of Transmissible Diseases, Instituto Nacional de Ciencias Neurologicas, Lima, Perú; Departments of International Health and Biostatistics, Johns Hopkins University School of Hygiene and Public Health, Baltimore; Asociacion Benefica PRISMA, Lima, Perú; School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Lima, Perú; Parasitic Diseases Branch, Centers for Disease Control and Prevention, Atlanta.

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SILVIA RODRIGUEZ Departments of Microbiology and Pathology, Universidad Peruana Cayetano Heredia, Lima, Perú; Department of Transmissible Diseases, Instituto Nacional de Ciencias Neurologicas, Lima, Perú; Departments of International Health and Biostatistics, Johns Hopkins University School of Hygiene and Public Health, Baltimore; Asociacion Benefica PRISMA, Lima, Perú; School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Lima, Perú; Parasitic Diseases Branch, Centers for Disease Control and Prevention, Atlanta.

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CESAR GAVIDIA Departments of Microbiology and Pathology, Universidad Peruana Cayetano Heredia, Lima, Perú; Department of Transmissible Diseases, Instituto Nacional de Ciencias Neurologicas, Lima, Perú; Departments of International Health and Biostatistics, Johns Hopkins University School of Hygiene and Public Health, Baltimore; Asociacion Benefica PRISMA, Lima, Perú; School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Lima, Perú; Parasitic Diseases Branch, Centers for Disease Control and Prevention, Atlanta.

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VICTOR C. W. TSANG Departments of Microbiology and Pathology, Universidad Peruana Cayetano Heredia, Lima, Perú; Department of Transmissible Diseases, Instituto Nacional de Ciencias Neurologicas, Lima, Perú; Departments of International Health and Biostatistics, Johns Hopkins University School of Hygiene and Public Health, Baltimore; Asociacion Benefica PRISMA, Lima, Perú; School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Lima, Perú; Parasitic Diseases Branch, Centers for Disease Control and Prevention, Atlanta.

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NESTOR FALCON Departments of Microbiology and Pathology, Universidad Peruana Cayetano Heredia, Lima, Perú; Department of Transmissible Diseases, Instituto Nacional de Ciencias Neurologicas, Lima, Perú; Departments of International Health and Biostatistics, Johns Hopkins University School of Hygiene and Public Health, Baltimore; Asociacion Benefica PRISMA, Lima, Perú; School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Lima, Perú; Parasitic Diseases Branch, Centers for Disease Control and Prevention, Atlanta.

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ANDRES G. LESCANO Departments of Microbiology and Pathology, Universidad Peruana Cayetano Heredia, Lima, Perú; Department of Transmissible Diseases, Instituto Nacional de Ciencias Neurologicas, Lima, Perú; Departments of International Health and Biostatistics, Johns Hopkins University School of Hygiene and Public Health, Baltimore; Asociacion Benefica PRISMA, Lima, Perú; School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Lima, Perú; Parasitic Diseases Branch, Centers for Disease Control and Prevention, Atlanta.

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LAWRENCE H. MOULTON Departments of Microbiology and Pathology, Universidad Peruana Cayetano Heredia, Lima, Perú; Department of Transmissible Diseases, Instituto Nacional de Ciencias Neurologicas, Lima, Perú; Departments of International Health and Biostatistics, Johns Hopkins University School of Hygiene and Public Health, Baltimore; Asociacion Benefica PRISMA, Lima, Perú; School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Lima, Perú; Parasitic Diseases Branch, Centers for Disease Control and Prevention, Atlanta.

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TERESA BERNAL Departments of Microbiology and Pathology, Universidad Peruana Cayetano Heredia, Lima, Perú; Department of Transmissible Diseases, Instituto Nacional de Ciencias Neurologicas, Lima, Perú; Departments of International Health and Biostatistics, Johns Hopkins University School of Hygiene and Public Health, Baltimore; Asociacion Benefica PRISMA, Lima, Perú; School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Lima, Perú; Parasitic Diseases Branch, Centers for Disease Control and Prevention, Atlanta.

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MARCO TOVAR Departments of Microbiology and Pathology, Universidad Peruana Cayetano Heredia, Lima, Perú; Department of Transmissible Diseases, Instituto Nacional de Ciencias Neurologicas, Lima, Perú; Departments of International Health and Biostatistics, Johns Hopkins University School of Hygiene and Public Health, Baltimore; Asociacion Benefica PRISMA, Lima, Perú; School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Lima, Perú; Parasitic Diseases Branch, Centers for Disease Control and Prevention, Atlanta.

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The prevalence and characteristics of human taeniasis/cysticercosis and porcine cysticercosis were assessed in an endemic area of the Peruvian highlands. Individuals from 10 communities had stool examinations (N = 2,951) and serologic testing for Taenia solium antibodies (N = 2,583). The total porcine population present (N = 703) was also examined by serology. Cysticercosis is hyperendemic in this area and is associated with an important number of seizure cases. Human seroprevalence by village ranged from 7.1–26.9% (mean, 13.9%). Seroprevalence was higher among individuals with a history of seizures but not in those reporting a history of headache or intestinal taeniasis. Prevalence of taeniasis ranged from 0–6.7% (median, 2.5%). Coproantigen detection found 2.4 times more taeniasis cases than did microscopy (direct and after concentration). Age distribution for taeniasis showed a peak at younger ages than for seroprevalence. Porcine seroprevalence ranged from 42–75%. Random effects logistic regression models for human seropositivity demonstrated both in-house clustering of cases and a large increase in risk associated with a tapeworm carrier in the house. Besides confirming the close relationship between taeniasis and cysticercosis cases, this large-scale field study demonstrated early age of tapeworm and cysticercosis infections in humans, and short duration of taeniasis infections.

Author Notes

Reprint requests: Robert H. Gilman, Department of International Health, Johns Hopkins University School of Hygiene and Public Health, 615 N. Wolfe Street, Room 3501, Baltimore, MD 21205. Phone: 410-614-3639, Fax: 410-614-6060, E-mail: rgilman@jhsph.edu
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