Active transmission of human chagas disease in Colima Mexico

Coll-Cárdenas, Rafael; Espinoza‐Gómez, Francisco; Maldonado-Rodríguez, Arcadio; Reyes-López, Pedro Antonio; Huerta, Miguel; Rojas-Larios, Fabián

doi:10.1590/s0074-02762004000400004

Cited by 17 publications

(7 citation statements)

References 21 publications

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“…31,32 Other studies in Brazil and Ecuador reported that the ECG abnormalities were more prevalent in older subjects, especially males. 33,34 However, our results are similar to those of a seroepidemiologic survey in Mexico in which 74.5% of the seropositive persons were less than 39 years of age. 6 We have identified zones endemic for Chagas disease in the Hidalgo State of Mexico on the basis of the presence of triatomines, characteristics of isolates of T. cruzi, and seropositive individuals with cardiac abnormalities.…”

Section: Discussionsupporting

confidence: 87%

Human Infection and Risk of Transmission of Chagas Disease in Hidalgo State, Mexico

Flores

Rangel-Flores

Palafox

et al. 2007

The American Journal of Tropical Medicine and Hygiene

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New zones with risk of infection for Chagas disease were reported in San Antonio Tezoquipan, Caltimacan, and El Ahorcado in the Hidalgo State of Mexico. Antibodies to Trypanosoma cruzi were detected by enzyme-linked immunosorbent assay and indirect hemagglutination assay in human serum samples. Study subjects were also given an electrocardiogram. Trypanosoma cruzi was isolated from triatomines collected and its virulence was determined in BALB/c mice. Seropositive persons were found in the three regions studied and seroprevalence of T. cruzi ranged between 3.25% and 5.13%. Six of eight seropositive persons had cardiac alterations. The species of triatomines detected were Triatoma barberi, Triatoma mexicana, and Triatoma dimidiata, and at least one of each species was infected with T. cruzi. Entomologic indexes from the zones were determined, and El Ahorcado showed the greatest risk of infection. In this region, we found more virulent isolates of T. cruzi in Triatoma barberi, and the highest human seroprevalence for T. cruzi.

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Section: Discussionsupporting

confidence: 87%

Human Infection and Risk of Transmission of Chagas Disease in Hidalgo State, Mexico

Flores

Rangel-Flores

Palafox

et al. 2007

The American Journal of Tropical Medicine and Hygiene

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“…Supported, in part, by local health authorities, they performed a survey throughout the state, covering several topics: clinical features (cardiology, gastroenterology), entomology, serology, sociology, and parasitology, but not reservoirs. This situation shows that Chagas disease in Mexico is there to be found when it is looked for (LozanoKasten 1997, Capps & Begona 2004, Coll-Cardenas et al 2004). Guerrero state also became important as an increasing number of studies were published there.…”

Section: Discussionmentioning

confidence: 97%

Chagas disease in Mexico: an analysis of geographical distribution during the past 76 years - A review

Cruz-Reyes

Pickering-López

2006

Mem. Inst. Oswaldo Cruz

132

104

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“…La zona occidental del país se considera zona endémica, lo que se ha demostrado por el número de casos presuntivos de enfermedad, detectados serológicamente o mediante las manifestaciones clínicas y por los reportes de los bancos de sangre (3)(4)(5).…”

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Vigilancia de la presencia de triatominos mediante gallineros en el sur de Jalisco, México

et al. 2010

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Introducción. En México, la enfermedad de Chagas es un problema de salud pública. Se han registrado, al menos, 30 especies de triatominos vectores, la mayoría con hábitos domésticos y tendencia a invadir las viviendas humanas. Objetivo. Evaluar la utilidad de gallineros en la vigilancia de la presencia de triatominos peridomésticos y conocer su situación en el área de estudio. Materiales y métodos. Se realizó un estudio de campo, experimental, longitudinal, por un año. Se instalaron 50 gallineros en 50 viviendas de tres localidades del municipio de Teocuitatlán de Corona, en el estado de Jalisco, México. Se inspeccionaron los gallineros y las viviendas para saber si aquéllos podían detectar la presencia de triatominos, para estimar la situación vectorial en el área. Resultados. Se recolectaron significativamente (p<0,05) más especímenes de Meccus longipennis (93%) que de Triatoma barberi (7%). Aproximadamente, un tercio (31,3%) de los especímenes de M. longipennis y ninguno de T. barberi se recolectó en los gallineros. M. longipennis tuvo un porcentaje de infección por Trypanosoma cruzi de 25,7%, y T. barberi, de 53,2%. Los meses de primavera y verano fueron en los que se recolectaron más ejemplares de triatominos. Conclusiones. Los gallineros se consideran una herramienta útil para detectar la presencia de ejemplares de M. longipennis, aunque no funcionaron para T. barberi. Se confirma la importancia de M. longipennis y se establece el posible rol primario de T. barberi como vector en el área de estudio.Palabras clave: enfermedad de Chagas, Triatominae, vectores de enfermedades, vigilancia, aves de corral, México.Monitoring triatomid bug (Hemiptera: Reduviidae) presence by sentinel chicken coops in Southern Jalisco State, México Introduction. Chagas disease is an important public health problem in Mexico. At least 30 Triatominae species, vectors of that disease have been recorded, most with domiciliary habits and tendency to invade human dwellings. Objective. The usefulness of using chicken coops was evaluated for monitoring peridomestic triatomine presence, identity and infection with Trypanosoma cruzi. Materials and methods. A year-long, longitudinal field study was designed. Fifty chicken coops were placed in 50 human dwellings on three localities in Teocuitatlán de Corona County, Jalisco State, Mexico. The coops and human dwellings were routinely inspected to determine if the coops alone can monitor for the presence of triatomines. Results. Significantly (p<0.05) more Meccus longipennis specimens (93.0%) than of Triatoma barberi (7.0%) were collected. Almost a third (31.3%) of M. longipennis and none of T. barberi specimens were collected in the coops. Meccus longipennis was found with infections of Trypanosoma cruzi of 25.7%, and T. barberi of 53.2%. Most triatomines were collected in spring and summer months. Conclusions. Chicken coops proved useful tools to detect presence of M. longipennis; however, they were not effective for T. barberi. The importance of M. longipennis as a potential vector was confir...

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Active transmission of human chagas disease in Colima Mexico

Abstract: Despite efforts to eradicate American trypanosomiasis (AT) and

Cited by 17 publications

References 21 publications

Human Infection and Risk of Transmission of Chagas Disease in Hidalgo State, Mexico

Human Infection and Risk of Transmission of Chagas Disease in Hidalgo State, Mexico

Chagas disease in Mexico: an analysis of geographical distribution during the past 76 years - A review

Vigilancia de la presencia de triatominos mediante gallineros en el sur de Jalisco, México

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