| chagas' disease in el salvador. | several studies on chagas' disease in el salvador have supplied important epidemiologic information, including the following: (1) rates of house infestation by triatomid vectors have ranged from 26.3 per cent to 100 per cent in various localities studied, higher rates being found in rural than in urban areas. (2) triatoma dimidiata and rhodnius prolixus are the two vectors of t. cruzi in el salvador, with t. dimidiata predominating in localities at elevations above 600 meters and r. prolixus in ... | 1975 | 808244 |
| chromosomal variation and genome size support existence of cryptic species of triatoma dimidiata with different epidemiological importance as chagas disease vectors. | the wide geographical distribution of triatoma dimidiata, one of the three major vectors of chagas disease, ranges from mexico to northern peru. since this species occupies a great diversity of artificial and natural ecotopes, its eradication is extremely difficult. in order to assist control efforts, we used chromosome analyses and dna amount as taxonomic markers to study genetic variability in populations of t. dimidiata from mexico, guatemala, el salvador and colombia. we differentiated three ... | 2006 | 16827710 |