| genetic variability and microdistribution of triatoma infestans genotypes and trypanosoma cruzi clones in arequipa region (peru). | the genetic variability of triatoma infestans and trypanosoma cruzi populations was studied by isoenzyme analysis in two distinct areas of arequipa province (peru); one, santa rita de siguas, being an endemic area for chagas' disease, the second, arequipa, recently infected. analysis of t. infestans genetic variability indicates, (i) temporal stability of genotypes found in santa rita de siguas, (ii) high genetic differences between arequipa and santa rita de siguas populations suggesting minor ... | 1997 | 9332609 |
| periurban trypanosoma cruzi-infected triatoma infestans, arequipa, peru. | in arequipa, peru, vectorborne transmission of chagas disease by triatoma infestans has become an urban problem. we conducted an entomologic survey in a periurban community of arequipa to identify risk factors for triatomine infestation and determinants of vector population densities. of 374 households surveyed, triatomines were collected from 194 (52%), and trypanosoma cruzi-carrying triatomines were collected from 72 (19.3%). guinea pig pens were more likely than other animal enclosures to be ... | 2006 | 17073082 |
| entomological factors affecting the low endemicity of chagas disease in nazca, southwestern peru. | chagas disease is prevalent in peru. the province of nazca, in the southwestern region of the country, shows a high intradomiciliary infestation rate of triatoma infestans bugs. although the vector is present, the number of chagas disease cases appears to be much lower than those reported in the neighboring region of arequipa. we examined 624 t. infestans from nazca to determine the current trypanosoma cruzi infection rates, and found that no bugs were infected with this parasite. these results ... | 2010 | 19874184 |