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CATACAMAS VIRUS, A HANTAVIRAL SPECIES NATURALLY ASSOCIATED WITH ORYZOMYS COUESI (COUES’ ORYZOMYS) IN HONDURAS

The primary objective of this study was to extend our knowledge of the geographical distribution, genetic diversity, and natural host associations of the hantaviruses indigenous to North America. Antibody to a hantavirus was found in 5 (20.8%) of 24 Coues’ oryzomys (Oryzomys couesi) and none of 41 other rodents captured near the town of Catacamas in eastern Honduras, and a hantavirus was isolated from one of the antibody-positive Coues’ oryzomys. Analyses of nucleotide and amino acid sequence data indicated that the viral isolate is a strain of a novel hantaviral species (proposed species name "Catacamas virus") that is phylogenetically most closely related to Bayou virus, a hantaviral species that is principally associated with Oryzomys palustris (marsh oryzomys) in the southeastern United States. Catacamas virus is the first evidence for the occurrence of a hantaviral species in Honduras and the first evidence that a hantaviral species is naturally associated with an Oryzomys species other than O. palustris.

Received April 13, 2006. Accepted for publication July 10, 2006.

Acknowledgments: Members of the 2001 Field Methods Class, Texas Tech University, and members of the 2001 Sowell Expedition captured and processed the rodents. Mary Louise Milazzo, Maria N. B. Cajimat, and J. Delton Hanson contributed equally to this study.

Financial support: A grant from James Sowell to Robert J. Baker (Texas Tech University) and Robert D. Bradley provided financial support for the field component of this study. National Institutes of Health Grant AI-41435 ("Ecology of emerging arenaviruses in the southwestern United States") provided financial support for the laboratory work at UTMB and at Texas Tech University.

^* Address correspondence to Charles F. Fulhorst, Department of Pathology, Delivery code L14686, University of Texas Medical Branch, 301 University Blvd., Galveston, Texas 77555-0609. E-mail:cfulhors{at}utmb.edu

Authors’ addresses: Mary Louise Milazzo, Department of Pathology, University of Texas Medical Branch, 301 University Blvd., Galveston, Texas 77555-0609, Telephone: (409) 747-2466, Fax: (409) 747-2437, E-mail: mamilazz{at}utmb.edu; Maria N.B. Cajimat, Department of Microbiology and Immunology, University of Texas Medical Branch, 301 University Blvd., Galveston, TX 77555-1019, Telephone: (409) 747-2466, Fax: (409) 747-2437, E-mail: nbcajirm{at}utmb.edu; J. Delton Hanson, Department of Biological Sciences, Texas Tech University, Lubbock, TX 79409-3131, Telephone: (806) 742-2725, Fax: (806) 742-2963, E-mail: jdh95{at}yahoo.com; Robert D. Bradley, Department of Biological Sciences and Museum, Texas Tech University, Lubbock, TX 79409-3131, Telephone: (806) 742-2725, Fax: (806) 742-2963, E-mail: robert.bradley{at}ttu.edu; Miguel Quintana, USACHPPM-W, MCHB-AW, Box 339500, MS 115, Fort Lewis, WA 98433-9500, Telephone: (253) 966-3771, Fax: (253) 966-0163, E-mail: miguel.quintana{at}us.army.mil; Catalina Sherman, Dirección de Vigilancia de Salud, Secretaria de Salud de Honduras, Contiguo al Correo Nacional, Barrio El Jazmin, Tegucigalpa, M.D.C., Honduras, Telephone: 504-2381103; Fax: 504-2221036, E-mail: shermankaty{at}yahoo.com; Reina T. Velásquez, Dirección de Vigilancia de Salud, Secretaria de Salud de Honduras, Contiguo al Correo Nacional, Barrio El Jazmin, Tegucigalpa, M.D.C., Honduras, Telephone: 504-2381103, Fax: 504-2221036; Charles F. Fulhorst, Department of Pathology, University of Texas Medical Branch, 301 University Blvd., Galveston, TX 77555-0609, Telephone: (409) 772-9713, Fax: (409) 747-2400, E-mail: cfulhors{at}utmb.edu

Reprint requests: Charles F. Fulhorst, Department of Pathology, Delivery code L14686, University of Texas Medical Branch, 301 University Blvd., Galveston, TX 77555-0609 E-mail: cfulhors{at}utmb.edu.

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