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PERIDOMICILARY HABITAT AND RISK FACTORS FOR TRIATOMA INFESTATION IN A RURAL COMMUNITY OF THE MEXICAN OCCIDENT

An examination of peridomestic area organization and triatomine collection in an endemic village for Chagas disease (Jalisco State) identified the habitat of Triatoma longipennis (dominant species) and the risk factors of peridomestic infestation. In 100 visited peridomestic areas, 369 structures (permanent, temporary, and natural) were submitted to active manual research of triatomines. Storage shelters had a higher infestation of T. longipennis than piles of brick and tile; baked clay material had higher degrees of infestation than others. The secondary species Triatoma barberi shares a wide range of peridomicilary habitats with T. longipennis. Peridomestic area infestation risks (evaluated with multivariate logistic regression analysis) are number of closed storage shelters, number of brick and tile piles, number of houses per peridomestic areas, and distance of peridomicile from natural environment. Because both species present great adaptability to different artificial habitats, strategies of control must involved improving the overall management of peridomestic areas to prevent stable colonization.

Received November 16, 2005. Accepted for publication November 27, 2006.

Financial support: This study received financial support from the PAHO, Communicable Disease programme, TDR Grant ID A30442, and the Institut de Recherche pour le Développement (IRD).

^* Address correspondence to Simone F. Brenière, Institut de Recherche pour le Développement (IRD), UR 008 Pathogénie et Epidémiologie des Trypanosomatidés, 911 Av. Agropolis, BP 64501, 34394 Montpellier Cedex 5, France. E-mail: breniere{at}mpl.ird.fr

Authors’ addresses: Annie Walter, Institut de Recherche pour le Développement (IRD), UR016, Control et Caractérisation des Populations de Vecteurs, 911 Av. Agropolis, BP 64501, 34394 Montpellier Cedex 5, France, E-mail: annie.walter{at}ird.fr. Felipe Lozano-Kasten, Centro Universitario de Ciencias de la Salud, Departamento de Salud Pública, AP 2-136, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico, E-mail: f_lozano_k{at}hotmail.com. Marie-France Bosseno, Institut de Recherche pour le Développement (IRD), UR 008 Pathogénie et Epidémiologie des Trypanosomatidés, 911 Av. Agropolis, BP 64501, 34394 Montpellier Cedex 5, France, E-mail: Marie-France.bosseno{at}mpl.ird.fr. Eloy Gualberto Castillo Ruvalcaba, Centro Universitario de Ciencias de la Salud, Departamento de Salud Pública, AP 2-136, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico, E-mail: eloy_castillo{at}hotmail.com. Margarita Soto Gutierrez, Centro Universitario de Ciencias de la Salud, Departamento de Salud Pública, AP 2-136, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico, E-mail: msg0059_2001{at}hotmail.com. Christian Eloy Montañ Luna, Centro Universitario de Ciencias de la Salud, Departamento de Salud Pública, AP 2-136, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico, E-mail: Chemolu @hotmail.com. Françise Baunaure, Institut de Recherche pour le Développement (IRD), UR 008 Pathogénie et Epidémiologie des Trypanosomatidés, 911 Av. Agropolis, BP 64501, 34394 Montpellier Cedex 5, France, E-mail: fbaunaure{at}univ-montp2.fr. Pascale Phéinas, Institut de Recherche pour le Développement (IRD), UR003, Travail et Mondialisation, 911 Av. Agropolis, BP 64501, 34394 Montpellier Cedex 5, France, E-mail: phelinas{at}ird.fr. Ezequiel Magalló-Gastéum, Centro Universitario de Ciencias de la Salud, Departamento de Salud Pública, AP 2-136, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico, E-mail: mge28525{at}cucs.udg.mx. Simone F. Brenière, Institut de Recherche pour le Développement (IRD), UR 008 Pathogénie et Epidémiologie des Trypanosomatidés, 911 Av. Agropolis, BP 64501, 34394 Montpellier Cedex 5, France, E-mail: breniere{at}mpl.ird.fr.