| [study of the factors determining an unexpected occurrecne of chagas cardiomyopathy in sucre, bolivia]. | the purpose of this case-control study carried out between february 1, 1994 and december 22, 1994 at the "instituto de gastroenterologia boliviano-japonés" in sucre, bolivia was to determine risk factors for chronic chagas cardiomyopathy in adult patients with positive serological tests for trypanosoma cruzi. a total of 196 subjects were included. inclusion criteria were positive serological tests for trypanosoma cruzi, residence in the city of sucre, bolivia for at least 3 months, and age over ... | 1998 | 9791592 |
| genetic diversity of triatoma infestans (hemiptera: reduviidae) in chuquisaca, bolivia based on the mitochondrial cytochrome b gene. | partial cytochrome b dna sequences for 62 triatoma infestans were analyzed to determine the degree of genetic variation present in populations of this insect in the northwest region of chuquisaca, bolivia. a total of seven haplotypes were detected in the localities sampled. the phylogenetic relationship and population genetic structure of the haplotypes found in this region, indicate that there is greater variation in this relatively small region of bolivia than what has been previously reported ... | 2006 | 16410965 |
| pcr reveals significantly higher rates of trypanosoma cruzi infection than microscopy in the chagas vector, triatoma infestans: high rates found in chuquisaca, bolivia. | the andean valleys of bolivia are the only reported location of sylvatic triatoma infestans, the main vector of chagas disease in this country, and the high human prevalence of trypanosoma cruzi infection in this region is hypothesized to result from the ability of vectors to persist in domestic, peri-domestic, and sylvatic environments. determination of the rate of trypanosoma infection in its triatomine vectors is an important element in programs directed at reducing human infections. traditio ... | 2007 | 17597541 |
| microsatellites reveal a high population structure in triatoma infestans from chuquisaca, bolivia. | for chagas disease, the most serious infectious disease in the americas, effective disease control depends on elimination of vectors through spraying with insecticides. molecular genetic research can help vector control programs by identifying and characterizing vector populations and then developing effective intervention strategies. | 2008 | 18365033 |
| differential patterns of insecticide resistance in eggs and first instars of triatoma infestans (hemiptera: reduviidae) from argentina and bolivia. | previous work at our laboratory has indicated high resistance levels to deltamethrin correlated with failures of chemical control in field populations of triatoma infestans (klug, 1834) (hemiptera: reduviidae) in northern argentina and southern bolivia. the aim of the present work was to study the resistance patterns in eggs and first instars of t. infestans in populations from argentina and bolivia. at the egg stage, a population from salvador mazza, argentina, showed the highest resistance rat ... | 2008 | 18533435 |
| a new method for forensic dna analysis of the blood meal in chagas disease vectors demonstrated using triatoma infestans from chuquisaca, bolivia. | feeding patterns of the vector are important in the epidemiology of chagas disease, the leading cause of heart disease in latin america. chagas disease is caused by the parasite, trypanasoma cruzi, which is transmitted by blood feeding insects. historically, feeding behaviours of haematophagous insects have been investigated using serological reactions, which have detection limits in terms of both taxonomic resolution, and quantity and quality of the blood meal. they are labor intensive, require ... | 2008 | 18974787 |