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A dengue-2 epidemic causing dengue hemorrhagic fever (DHF) occurred in the contiguous border cities of Matamoros, Tamaulipas (Mexico), and Brownsville, TX, in 2005. In December, we conducted a household-based epidemiologic survey to determine the incidence and seroprevalence of dengue infection among Matamoros and Brownsville residents and to identify risk factors associated with infection. Antibodies to dengue were measured in 273 individuals. The estimated incidence of recent dengue infection was 32% and 4% among Matamoros and Brownsville participants, respectively. The estimated prevalence of past dengue infection was 77% and 39% among Matamoros and Brownsville participants, respectively. The Breteau index was 28 in Matamoros and 16 in Brownsville, reflecting an abundant winter population of Aedes mosquitoes. Discarded waste tires and buckets were the two largest categories of infested containers found in both cities. Our results underscore the risk for epidemic dengue and DHF in the Texas-Mexico border region.
Received October 16, 2007. Accepted for publication December 18, 2007.
Acknowledgments: The authors thank Carlos A. Carrillo, Oscar Velasquez-Monroy, CENAVECE, Secretaria de Salud de Tamaulipas, Jurisdiccion Sanitaria No. III, Matamoros, Cameron County Department of Health and Human Services, City of Brownsville Health Department, Texas Department of State Health Services, Jim Schuermann, Chester Moore, Roberto Barrera, Joshua Smith, Carmen Perez, Elizabeth Hunsperger, and Nadonnia Jones.
* Address correspondence to Mary M. Ramos, Department of Pediatrics, University of New Mexico, 300 San Mateo Boulevard, NE, Suite 902, Albuquerque, NM 87108. E-mail: mramos{at}salud.unm.edu
Other members of The Dengue Serosurvey Working Group include Carlos Moya-Rabelly (Mexico Section of the US–Mexico Border Health Commission), Carlos Álvarez-Lucas and Cuahtemoc Mancha (Centro Nacional de Vigilancia Epidemiológica y Control de Enfermedades), Luis Fernando Garza Frausto, Ernesto Lavin Hernandez, and Norma Alicia Villarreal Reyes (Servicios de Salud de Tamaulipas), Victor Garcia Fuentes and Oscar Ramirez Contreras (Jurisdicción Sanitaria No. III de Matamoros), Joshua Ramirez (City of Brownsville Public Health Department), Mark Beatty (Pediatric Dengue Vaccine Initiative), Rafael Moreno-Sanchez (University of Colorado), Iris Sosa, Sophie Wenzel, Brad Biggerstaff, and Miguel Escobedo (Centers for Disease Control and Prevention).
Authors addresses: Mary M. Ramos, Department of Pediatrics, University of New Mexico, 300 San Mateo NE, Suite 902, Albuquerque, NM 87108, Tel: 505-222-8684, Fax: 505-222-8675, E-mail: mramos{at}salud.unm.edu. Hamish Mohammed and Jorge L. Muñoz, Dengue Branch, Centers for Disease Control and Prevention, 1324 Calle Cañada, San Juan, Puerto Rico 00920-3860, Tel: (787) 706-2399, Fax: (787) 706-2496, E-mails: HMohammed{at}cdc.gov and ckq2{at}cdc.gov. Emily Zielinski-Gutierrez, Division of Vector Borne Infectious Diseases, Centers for Disease Control and Prevention, 3150 Rampart Road, Foothills Campus, Fort Collins, CO 80521, Tel: 970-221-6477, Fax: 970-266-3502, E-mail: ebz0{at}cdc.gov. Mary H. Hayden, National Center for Atmospheric Research, PO Box 3000, Boulder, CO 80309, Tel: 303-497-8116, Fax: 303-497-8125, E-mail: mhayden{at}ucar.edu. Jose Luis Robles Lopez, Francisco Sarabia 153 Col. Mexico Agrario C.P. 87440, H. Matamoros Tamaulipas Mexico, Tel: (868) 8192565 and (868) 8140280, Fax: (868) 8174930, E-mails: jlrobles{at}salud.gob.mx and drjlrobles{at}hotmail.com. Marta Fournier and Brian Smith, Tx DSHS, Health Service Region 11, 601 W. Sesame, Harlingen, TX 78550, Tel: (956) 444-3227, (956) 444-3202, Fax: (956) 444-3299, E-mails: Marta.Fournier{at}dshs.state.tx.us and Brian.Smith{at}dshs.state.tx.us. Alfredo Rodríguez Trujillo, Palacio Federal 3r. Piso, Servicios de Salud de Tamaulipas, Cd. Victoria, Tamaulipas, Tel: (011-52-834) 315-68-83, Fax: (011-52-834) 315-68-83, E-mail: alfredordz{at}salud.gob.mx. Roy Burton, TX DSHS, PSQA Environmental Health, 8407 Wall St., Austin, TX 78754, Tel: (512) 834-6773, x2302, Fax: (512) 834-6706, E-mail: Roy.Burton{at}dshs.state.tx.us. Joan M. Brunkard, Epidemic Intelligence Service Program, Centers for Disease Control and Prevention, 3101 West Napoleon Ave., Metairie, LA 70001, Tel: 504-219-4732, Cell: 504-875-8584, E-mail: jbrunkard{at}cdc.gov. Luis Anaya-Lopez, Director de Servicios y Apoyo Técnico, CENAVECE/InDRE, Carpio No. 470, Col. Sto Tomás, Deleg. Miguel Hidalgo, Mex. D.F., 11340, Tel: (011-52-55) 5396-4986, 5342 7550 X.204 o 303, Fax: (011-52-55) 341 32 64, E-mail: anayaluis{at}hotmail.com. Allison Abell Banicki, Office of Border Health, Texas Dept. of State Health Services, 1100 W. 49th St., Austin, TX 78756, Tel: 512-458-7111 ext 6705, E-mail: allison.abell{at}dshs.state.tx.us. Pablo Kuri Morales, Francisco de P. Miranda No. 177, 4° Piso, Colonia Lomas de Plateros, 01480 México, Distrito Federal (DF), Tel: (011-52-55) 5337-1664 al 66, Fax: (011-52-55) 5337 1667, E-mail: pkuri{at}dgepi.salud.gob.mx. Stephen H. Waterman, San Diego Quarantine and Border Health Services, Division of Global Migration and Quarantine, Centers for Disease Control and Prevention, 3851 Rosecrans Street, PO Box 85524, San Diego, CA 92138, Tel: (619) 692 5659, E-mail: shw2{at}cdc.gov.
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