| [monthly variations of the incidence of the evolution forms of triatoma infestans and panstrongylus megistus in the community of bambui, state of minas gerais (ii: 1951-1964)]. | | 1968 | 4908873 |
| differences in saliva composition among three brazilian populations of panstrongylus megistus (hemiptera, reduviidae). | comparisons of electrophoretic profiles of triatomines (panstrongylus megistus) from the brazilian states of bahia (ba), minas gerais (mg) and santa catarina (sc) revealed differences in the composition of the saliva between the three populations. a phenogram constructed on the basis of the most representative electrophoretic banding patterns allowed the specimens tested to be divided into two groups. the ba and sc populations could be completely separated while some individuals from mg could be ... | 1999 | 9924964 |
| interpopulation variability among panstrongylus megistus (hemiptera: reduviidae) from brazil. | comparisons were made among panstrongylus megistus (burmeister) from three areas of brazil (bahia, minas gerais, and santa catarina), where populations differ with regard to their degree of association with human dwellings. the following characters were studied: morphology of the eggs and the male genitalia; morphometry of the head and thorax; isoenzyme profile; enzymatic activity of the alpha-glycerophosphate dehydrogenase (alpha-gpdh); and cytogenetics. in general, differences were observed in ... | 2003 | 14680104 |
| patterns of antennal sensilla of panstrongylus megistus from three brazilian states. | the objective of the present study was to analyze and describe the phenotype of the antennal sensilla of panstrongylus megistus, one of the epidemiologically most important species of triatomines in brazil. specimens from the brazilian states of goiás (go), minas gerais (mg), and rio grande do sul (rs) were compared, based on studies of four types of sensilla on three antennal segments: thick-walled trichoid (tk), thin-walled trichoid (th), bristles (br), and basiconica (ba). discriminant analys ... | 2006 | 16410953 |
| biogeography of brazilian populations of panstrongylus megistus (hemiptera, reduviidae, triatominae) based on molecular marker and paleo-vegetational data. | in epidemiological terms, panstrongylus megistus is one of the most important species of triatomine bug in brazil. samples from 11 localities were studied using the random amplification of polymorphic dna (rapd) technique, which was able to differentiate the study populations clearly. biogeographical data indicate that these populations could already have arisen 18,000 years ago (c(14)), it being possible to differentiate insects from the brazilian states of santa catarina (sc) in the south, cea ... | 2006 | 17055993 |
| entomological surveillance of chagas disease in berilo municipality, jequitinhonha valley, state of minas gerais, brazil. | this study aimed to evaluate the chagas disease control program which has operated since 1982 in the municipality of berilo in the jequitinhonha valley, minas gerais, brazil, based on evaluation of 5,242 domiciliary units (dus) and 7,807 outbuildings over an eight-year period of epidemiological surveillance implanted in 1997. a total of 391 triatomines (280 panstrongylus megistus and 111 triatoma pseudomaculata) were captured, indicating the continued predominance of the former species. however, ... | 2009 | 20209342 |
| [analysis on the food source of panstrongylus megistus (hemiptera, reduviidae, triatominae) and its present importance as a vector for trypanosoma cruzi, in the state of minas gerais]. | investigation of the food source of triatomines helps in understanding the biology of these insects, and also helps to infer their importance in transmitting trypanosoma cruzi to humans. | 2010 | 20464139 |
| [integral insecticide spraying followed by immediate triatomine research, as an additional strategy for the epidemiological surveillance of chagas' disease, in areas of residual persisting foci]. | the locality of altolândia (tapiraí municipality, minas gerais, brazil), frequently presents panstrongylus megistus infestation in the domiciliary environment. in order to improve epidemiological surveillance in this area, a strategy of domiciliary pyrethroid spraying with high flushing-out effect followed by immediate triatomine research, was implemented in all the existing dwellings. the main objectives were the detection and elimination of cryptic foci, thus reducing the opportunities for new ... | 2006 | 16699656 |
| [entomological surveillance for chagas disease in the mid-western region of minas gerais state, brazil, from 2000 to 2003]. | in minas gerais state, brazil, after the elimination of triatoma infestans by the brazilian chagas disease control program, some triatomine species, such as panstrongylus megistus, have merited the attention of entomological surveillance authorities. after the decentralization of the brazilian health system, certain administrative and operational difficulties have been observed in some municipalities (counties). this study aims to evaluate entomological surveillance for chagas disease in the 54 ... | 2005 | 15868046 |
| [chagas' disease in lassance, minas gerais state: clinical-epidemiological re-evaluation ninety years after the discovery by carlos chagas]. | the history and present situation of chagas' disease in lassance (the county where carlos chagas discovered american trypanosomiasis) were studied through a historical analysis and clinical and epidemiological research performed from 1999 to 2001. lassance was an important focus of chagas' disease from carlos chagas up until the 1980's, because of intensive infestation in dwellings by panstrongylus megistus and triatoma infestans, two important species which were efficiently controlled in the la ... | 2002 | 12011926 |
| attempts to improve xenodiagnosis: comparative test of sensibility using rhodnius neglectus, panstrongylus megistus, triatoma vitticeps and triatoma infestans in endemic areas of brazil. | from june 1984 to july 1992, 392 xenodiagnostic tests were applied on 264 patients with chronic chagas disease from brazilian endemic areas of virgem da lapa and coronel murta, situated in the jequitinhonha valley, in the state of minas gerais. the susceptibilities of rhodnius neglectus, panstrongylus megistus, triatoma vitticeps and triatoma infestans were compared. most of the time 20 nymphs (fourth instar) of each species were applied to 161 women and 103 men aged between 5 and 83 years of ag ... | 1997 | 9302418 |
| inter-relation of sylvatic and domestic transmission of trypanosoma cruzi in areas with and without domestic vectorial transmission in minas gerais, brazil. | during the period 1980-1986, we captured triatomine bugs and mammalian reservoir hosts from sylvatic and domestic situations in different municipalities of the state of minas gerais. trypanosoma cruzi was isolated from captured bugs, mammals and patients. after cultivation in lit medium, the electrophoretic enzyme profiles were determined. we obtained a total of 32 parasite isolates from regions with active domestic transmission, and 24 isolates from areas under control. for the first areas the ... | 1995 | 8551947 |
| the importance of the opossum (didelphis albiventris) as a reservoir for trypanosoma cruzi in bambuí, minas gerais state. | in a survey realized on the sylvatic and peridomestic environments at bambuí county, minas gerais state, 44 (37.9%) out of 116 opossums (didelphis albiventris) captured were found to be naturally infected with trypanosoma cruzi. one hundred and forty three parasite samples were obtained from 43 infected opossums using simultaneously hemoculture, xenodiagnosis (triatoma infestans, panstrongylus megistus and rhodnius neglectus) and examination of anal glands contents. the parasite samples were cha ... | 1991 | 1842405 |
| the threat of reintroduction of natural transmission of chagas' disease in bambuí, minas gerais state, brazil, due to panstrongylus megistus. | in the epidemiological surveillance program in the county of bambuí, minas gerais, between august 1986 and december 1988, 154 panstrongylus megistus were captured by the local population in both peridomicile and intradomicile environments. fifteen (9.8%) of the p. megistus harboured trypanosoma cruzi. precipitin tests showed that the most frequent triatomine blood meal sources were birds, but other sources were dogs, men and cats. the isoenzyme characterization of 13 t. cruzi strains showed that ... | 1992 | 1308572 |
| [evaluation of the chagas disease control program and presence of panstrongylus megistus in central-western minas gerais state, brazil]. | the brazilian national chagas disease control program (pcdch) is currently in the epidemiological surveillance phase and poses one of the principal challenges for maintaining and improving surveillance. with the decentralization of health actions, leading to the transfer of responsibilities over the control of endemic diseases to the state and municipal governments, some municipalities have faced difficulties in implementing the program, since they lack experience in controlling this disease. th ... | 2009 | 19347217 |