Guaroa Virus Infection among Humans in Bolivia and Peru

Patricia V. Aguilar Naval Medical Research Center Detachment, Lima, Peru; Department of Entomology, University of California, Davis, California; Office of Epidemiology, Lima, Peru; National Institute of Health, Lima, Peru; Centro de Enfermedades Tropicales, Santa Cruz, Bolivia; Department of Pathology and Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas

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Amy C. Morrison Naval Medical Research Center Detachment, Lima, Peru; Department of Entomology, University of California, Davis, California; Office of Epidemiology, Lima, Peru; National Institute of Health, Lima, Peru; Centro de Enfermedades Tropicales, Santa Cruz, Bolivia; Department of Pathology and Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas

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Claudio Rocha Naval Medical Research Center Detachment, Lima, Peru; Department of Entomology, University of California, Davis, California; Office of Epidemiology, Lima, Peru; National Institute of Health, Lima, Peru; Centro de Enfermedades Tropicales, Santa Cruz, Bolivia; Department of Pathology and Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas

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Douglas M. Watts Naval Medical Research Center Detachment, Lima, Peru; Department of Entomology, University of California, Davis, California; Office of Epidemiology, Lima, Peru; National Institute of Health, Lima, Peru; Centro de Enfermedades Tropicales, Santa Cruz, Bolivia; Department of Pathology and Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas

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Luis Beingolea Naval Medical Research Center Detachment, Lima, Peru; Department of Entomology, University of California, Davis, California; Office of Epidemiology, Lima, Peru; National Institute of Health, Lima, Peru; Centro de Enfermedades Tropicales, Santa Cruz, Bolivia; Department of Pathology and Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas

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Victor Suarez Naval Medical Research Center Detachment, Lima, Peru; Department of Entomology, University of California, Davis, California; Office of Epidemiology, Lima, Peru; National Institute of Health, Lima, Peru; Centro de Enfermedades Tropicales, Santa Cruz, Bolivia; Department of Pathology and Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas

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Jorge Vargas Naval Medical Research Center Detachment, Lima, Peru; Department of Entomology, University of California, Davis, California; Office of Epidemiology, Lima, Peru; National Institute of Health, Lima, Peru; Centro de Enfermedades Tropicales, Santa Cruz, Bolivia; Department of Pathology and Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas

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Cristhopher Cruz Naval Medical Research Center Detachment, Lima, Peru; Department of Entomology, University of California, Davis, California; Office of Epidemiology, Lima, Peru; National Institute of Health, Lima, Peru; Centro de Enfermedades Tropicales, Santa Cruz, Bolivia; Department of Pathology and Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas

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Carolina Guevara Naval Medical Research Center Detachment, Lima, Peru; Department of Entomology, University of California, Davis, California; Office of Epidemiology, Lima, Peru; National Institute of Health, Lima, Peru; Centro de Enfermedades Tropicales, Santa Cruz, Bolivia; Department of Pathology and Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas

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Joel M. Montgomery Naval Medical Research Center Detachment, Lima, Peru; Department of Entomology, University of California, Davis, California; Office of Epidemiology, Lima, Peru; National Institute of Health, Lima, Peru; Centro de Enfermedades Tropicales, Santa Cruz, Bolivia; Department of Pathology and Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas

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Robert B. Tesh Naval Medical Research Center Detachment, Lima, Peru; Department of Entomology, University of California, Davis, California; Office of Epidemiology, Lima, Peru; National Institute of Health, Lima, Peru; Centro de Enfermedades Tropicales, Santa Cruz, Bolivia; Department of Pathology and Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas

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Tadeusz J. Kochel Naval Medical Research Center Detachment, Lima, Peru; Department of Entomology, University of California, Davis, California; Office of Epidemiology, Lima, Peru; National Institute of Health, Lima, Peru; Centro de Enfermedades Tropicales, Santa Cruz, Bolivia; Department of Pathology and Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas

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Guaroa virus (GROV) was first isolated from humans in Colombia in 1959. Subsequent isolates of the virus have been recovered from febrile patients and mosquitoes in Brazil, Colombia, and Panama; however, association of the virus with human disease has been unclear. As part of a study on the etiology of febrile illnesses in Peru and Bolivia, 14 GROV strains were isolated from patients with febrile illnesses, and 3 additional cases were confirmed by IgM seroconversion. The prevalence rate of GROV antibodies among Iquitos residents was 13%; the highest rates were among persons with occupations such as woodcutters, fisherman, and oil-field workers. Genetic characterization of representative GROV isolates indicated that strains from Peru and Bolivia form a monophyletic group that can be distinguished from strains isolated earlier in Brazil and Colombia. This study confirms GROV as a cause of febrile illness in tropical regions of Central and South America.

Author Notes

*Address correspondence to Patricia V. Aguilar, United States Naval Medical Research Center Detachment, 3230 Lima Place, Washington, DC 20521-3230. E-mail: patricia.aguilar@med.navy.mil

Authors' addresses: Patricia V. Aguilar, United States Naval Medical Research Center Detachment, Washington, DC, E-mail: patricia.aguilar@med.navy.mil. Douglas M. Watts, Office of Research and Sponsored Projects, University of Texas at El Paso, El Paso, TX. Amy C. Morrison, Naval Medical Research Center Detachment, Iquitos, Peru and Department of Entomology, University of California, Davis, CA, E-mail: amy.aegypti@gmail.com. Claudio Rocha, Naval Medical Research Center Detachment, Iquitos, Peru, E-mail: claudiorochacalderon@gmail.com. Cristhopher Cruz, Naval Medical Research Center Detachment, Lima, Peru, E-mail: cristhopher.cruz@med.navy.mil. Carolina Guevara, Naval Medical Research Center Detachment, Lima, Peru, E-mail: carolina.guevara@med.navy.mil. Joel M. Montgomery, Naval Medical Research Center Detachment, Lima, Peru, E-mail: joel.montgomery@med.navy.mil. Tadeusz J. Kochel, Naval Medical Research Center Detachment, Lima, Peru, E-mail: tad.kochel@med.navy.mil. Luis Beingolea, Office of Epidemiology, Lima, Peru, E-mail: lbeingolea@conhu.org.pe. Victor Suarez, National Institute of Health, Lima, Peru, E-mail: vjsuarezm@yahoo.com. Jorge Vargas, Centro de Enfermedades Tropicales, Santa Cruz, Bolivia, E-mail: drjvargasf@hotmail.com.

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