Triatomines involved in domestic and wild Trypanosoma cruzi transmission in Concepción, Corrientes, Argentina
Mem. Inst. Oswaldo Cruz
;
97(1): 43-46, Jan. 2002. tab
Article
in English
| LILACS
| ID: lil-306073
ABSTRACT
An entomological and serological survey was performed in three localities of the Department of Concepción, Province of Corrientes, Argentina in 1998 and 1999, to identify triatomines species involved in domestic and wild transmission of Chagas disease. Triatomines were collected by man/hour capture in 32 houses randomly selected and 44 nearby outdoor ecotopes. Trypanosoma cruzi infection in triatomines was assessed by direct microscopic observation (400x) of feces and polymerase chain reaction. Serological techniques used for people were Indirect Hemagglutination Test and Indirect Fluorescent Test. Triatomines were collected in 28.1 percent of the houses and 31.8 percent of the wild biotopes. Triatoma infestans (Klug 1834) was exclusively found indoors and T. cruzi infected 60 percent of them. Triatoma sordida (StÕl 1859) was mainly found in extradomestic ecotopes where trypanosome infection rate reached 12.7 percent. Serological study of 98 local people showed that 29.6 percent were seroreactive; most of their houses were closed to wild biotopes colonized by T. sordida. Results indicate that there is an active T. infestans mediated transmission of Chagas disease in this zone that yields important human prevalence and that the populations of T. sordida in wild biotopes not only sustain the wild T. cruzi cycle but also represent an actual risk for people living in the area
Full text:
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Index:
LILACS (Americas)
Main subject:
Trypanosoma cruzi
/
Triatominae
/
Chagas Disease
/
Insect Vectors
Type of study:
Prevalence study
/
Risk factors
Limits:
Aged80
/
Animals
/
Female
/
Humans
/
Male
Country/Region as subject:
South America
/
Argentina
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
2002
Type:
Article
Affiliation country:
Argentina
Institution/Affiliation country:
Universidad Nacional del Nordeste/AR
/
Universidad de Buenos Aires/AR
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