Epidemiologia de la leishmaniasis tegumentaria en merida, Venezuela. I. Diversidade y dispersion de especies flebotominas en tres pisos altitudinales y su possible rôle en la transmission de enfermedad

Áñez, Néstor; Cazorla, Dalmiro; Nieves, Elsa; Chataing, Bernardo; Castro, Macarena; Yarbuh, Ana Lugo de

doi:10.1590/s0074-02761988000400011

Cited by 20 publications

(11 citation statements)

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“…Tropical climatic conditions and altitudes of up to 800 m above sea level (asl) favor transmission of Leishmania (Viannia) braziliensis (Mogollón et al 1977, Bonfante-Garrido 1983, Añez et al 1988, including in Brazil (Forattini et al 1972, Aguiar et al 1987, Azevedo & Rangel 1991, Passos et al 1993, Hermeto et al 1994, Domingos et al 1998, Gomes & Neves 1998, Rangel et al 1999.…”

mentioning

confidence: 99%

Distribution of sand flies (Diptera: Psychodidae) at different altitudes in an endemic region of American cutaneous leishmaniasis in the State of Espírito Santo, Brazil

Ferreira

Sessa

Varejão

et al. 2001

Mem. Inst. Oswaldo Cruz

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mentioning

confidence: 99%

Distribution of sand flies (Diptera: Psychodidae) at different altitudes in an endemic region of American cutaneous leishmaniasis in the State of Espírito Santo, Brazil

Ferreira

Sessa

Varejão

et al. 2001

Mem. Inst. Oswaldo Cruz

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“…It has been shown that these ACL-affected regions present foci with different degrees of endemicity, but only the infections detected in the western and central regions have been systematically described. [1][2][3][4][5] Presently, little is known about the epidemiology of leishmaniasis in the eastern region of the country.The general purpose of the study was to determine the distribution, prevalence, and risk factors for the disease within the endemic areas of the Turimiquire Mountains in the northeastern states of Venezuela. …”

mentioning

confidence: 99%

Epidemiologic characterization of American cutaneous leishmaniasis in an endemic region of eastern Venezuela.

Jorquera

Ledezma²,

Sousa³

et al. 1998

The American Journal of Tropical Medicine and Hygiene

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Abstract. The status of American cutaneous leishmaniasis was investigated from 1985 to 1991 to provide an epidemiologic characterization of the disease in Bergantin, a rural community in the northeastern part of Anzoátegui State, Venezuela. The study revealed the presence of the infection during the period analyzed, with an average incidence of 50.2 cases per 10,000 inhabitants and this number has increased 1.5 times during the last two years. Three villages where clinical cases had been recorded were selected for a comparison of their prevalence data. These villages comprise the human population in the high and low altitude limits of Bergantin. Immunologic assessment of the inhabitants used two different antigen preparations to examine responses to parasites associated with the cutaneous and visceral forms of the disease. The leishmanin skin test (LST) was used in a sample of 276 individuals (46.3% of the inhabitants) and resulted in an overall positivity of 16.7%. The percentage of LST positivity varied with age and sex, yet analysis of this response and the prevalence for each village reflected the specific characteristics of these localities. La Montaña, situated at 800 meters above sea level, had the highest prevalence (800 cases per 10,000 inhabitants) and the most positive LST response (21.2%) in comparison with the two other villages situated at a lower altitude (300 meters above sea level).Venezuela is one of the South American countries where American cutaneous leishmaniasis (ACL) is increasing. However, the epidemiologic characteristics of the disease are mostly unknown. Estimates of the number of cases are frequently unreliable due to local difficulties in diagnosis and the frequency of subclinical infections. 1 In general, a better understanding of the epidemiology of ACL is important so that effective control measures may be applied.The geographic distribution of ACL in Venezuela covers 21 of its 23 territorial divisions. It has been shown that these ACL-affected regions present foci with different degrees of endemicity, but only the infections detected in the western and central regions have been systematically described. [1][2][3][4][5] Presently, little is known about the epidemiology of leishmaniasis in the eastern region of the country.The general purpose of the study was to determine the distribution, prevalence, and risk factors for the disease within the endemic areas of the Turimiquire Mountains in the northeastern states of Venezuela. MATERIALS AND METHODSStudy area. This study was carried out in the territory of Bergantin located in the southwestern area of the Turimiquire Mountains between latitudes 10Њ03Ј30Љ'' and 10Њ00Ј17ЉN and longitudes 64Њ20Ј18Љ and 64Њ23Ј20ЉW in the Anzoátegui State of Venezuela. Bergantin comprises 36 villages within a total area of 630 km 2 . Of these, approximately 61 km 2 , including the villages of La Montaña (800 meters above sea level), La Panela (300 meters above sea level), and El Poblado (300 meters above sea level) (Figure 1), were studied. These villag...

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“…En lo que a L. ovallesi se refiere su distribución coincide con L. youngi a excepción de la localidad ubicada a 1.400 msnm, Total 9749 380 45 16 10 3 5 4 2 En el estado Mérida reportan a L. youngi como la especie más abundante en todos los pisos altitudinales estudiados (superior al 58%), seguido de L. trinidadensis (Newst, 1922) y de L. ovallesi (9,10). Al nordeste del estado Táchira en los límites con el estado Mérida describen a L. youngi como la especie más abundante y extensa del occidente venezolano (11).…”

Section: Resultsunclassified

“…Es de resaltar que en la zona alta (1.600 msnm) nunca se habían presentado casos, lo cual indica que a los 1.600 msnm de altitud se presenta una limitante para todos los flebótomos, especialmente, para L. youngi y, por ende, una barrera para la enfermedad. Esta relación también la indican en Trujillo, refiriendo que a partir de 1.600 y hasta los 1.900 msnm disminuía la población de L. youngi (8) y, posteriormente, en el estado Mérida se señala un límite de altura de 1.600 msnm para la captura de L. youngi (9,10).…”

Section: Discussionunclassified

Flebotomofauna al sureste del estado Lara, Venezuela

Traviezo¹

2012

biomedica

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Epidemiologia de la leishmaniasis tegumentaria en merida, Venezuela. I. Diversidade y dispersion de especies flebotominas en tres pisos altitudinales y su possible rôle en la transmission de enfermedad

Cited by 20 publications

References 0 publications

Distribution of sand flies (Diptera: Psychodidae) at different altitudes in an endemic region of American cutaneous leishmaniasis in the State of Espírito Santo, Brazil

Distribution of sand flies (Diptera: Psychodidae) at different altitudes in an endemic region of American cutaneous leishmaniasis in the State of Espírito Santo, Brazil

Epidemiologic characterization of American cutaneous leishmaniasis in an endemic region of eastern Venezuela.

Flebotomofauna al sureste del estado Lara, Venezuela

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