| [experimental schistosomiases. i. study of s. mansoni fecondity as regards to its adaptation to different biomphalaria glabrata strains (author's transl)]. | we compared the infestation of different strains of b. glabrata from brasil (recife). guadeloupe, martinique and porto-rico with 6 to 8 miracidia of s. mansoni (from recife. we noted the four following points: 1. the planorbid snails from martinique and guadeloupe had a low resistance to infestation. 2. the guadeloupean snails showed the lesser rate of positivity and the lower medium amount of emitted cercaries but, in the four strains of snails, the level of the issued cercaries is quite the sa ... | 1975 | 1221915 |
| intermediate hosts of schistosoma mansoni in brazil. | the brazilian planorbidical chart is slowly but progressively been increased by new data. distribution of vector species of schistosoma mansoni, according to paraense, 1986, may be thus resumed: biomphalaria glabrata--delimited by parallels 13 and 21 degrees s and meridians 39 and 45 degrees w, area of greater dominance (southeast bahia, oriental hal of minas gerais and espírito santo). it is observed along the coast line of the states of sergipe, alagoas, pernambuco, paraiba and rio grande do n ... | 1992 | 1343914 |
| genomic variability in field populations of schistosoma mansoni in brazil as detected with a ribosomal gene probe. | a cloned fragment of the ribosomal gene of schistosoma mansoni, psm 389, which contains part of the small rrna gene plus a portion of the nontranscribed intergenic spacer, was used in southern hybridization analyses to investigate genomic variation in natural populations of s. mansoni in brazil. genomic dnas were isolated from schistosomes from infected patients (some of whom did not respond to antischistosomal chemotherapy), and from snails from disparate geographic locations in brazil. restric ... | 1991 | 1671740 |
| serological studies on schistosomiasis mansoni in the northeast brazil (i). | sera from the patients (n = 10) with schistosomiasis mansoni of the hospital of federal university of pernambuco, the schistosoma mansoni egg-positive (n = 51) and -negative (n = 452) inhabitants in cabo city area, out-patients (n = 37) of the imip hospital and japanese immigrants (n = 127) in petrolina city area of northeast brazil as well as japanese healthy subjects (n = 30) were examined by serological tests including an enzyme-linked immunosorbent assay with antigens prepared from eggs (eli ... | 1990 | 2128904 |
| parasitological and serological studies on amoebiasis and other intestinal parasitic infections in the rural sector around recife, northeast brazil. | parasitological examinations were carried out during july to december, 1989, on 485 inhabitants of four villages in são lourenço da mata, 25 km northwest of recife, pernambuco, brazil. approximately 99.6% of the inhabitants were infected with at least one species of intestinal parasites. a high prevalence of schistosoma mansoni (82.1%), hookworm (80.2%) trichuris trichiura (69.9%), ascaris lumbricoides (61.9%) and entamoeba coli (36.7%) infections were demonstrated. test tube cultivation reveale ... | 1990 | 2135489 |
| incapacitating effects of schistosomiasis mansoni on the productivity of sugar-cane cutters in northeastern brazil. | studies were carried out on two sugar estates in the humid coastal forest region of northeastern brazil, a highly endemic area of schistosomiasis mansoni. results obtained in a retrospective study were not conclusive, but clear-cut results emerged from a prospective study. the latter was conducted on a sugar estate (catende) where the severe hepatosplenic clinical form of the disease is seen in 4% of the field-working population. comparison was made between two groups of paired subjects: one com ... | 1981 | 7246517 |
| [schistosomiasis in workers of the catende sugar mill, pernambuco, brazil]. | | 1980 | 7268291 |
| an ultrasonographic study of liver fibrosis in patients infected with schistosoma mansoni in north-east brazil. | between august 1988 and july 1990, 176 patients with schistosoma mansoni infection attending the university hospital, recife, brazil received a complete clinical examination including stool examination for intestinal parasites, liver function tests, and ultrasonography. the majority were also examined by upper digestive tract endoscopy. the clinical distribution of their disease was as follows: 26.7% intestinal, 13.6% hepato-intestinal, 53.4% compensated hepatosplenic and 6.3% decompensated hepa ... | 1993 | 8266409 |
| occurrence of a community with high morbidity associated with schistosoma mansoni infection regardless of low infection intensity in north-east brazil. | to establish the relationship between schistosome-associated morbidity and infection intensity in northeast brazil, a parasitological and ultrasonographical study was carried out on 484 inhabitants of 4 villages (i, ii, iii and iv) in são lourenço da mata, pernambuco, brazil, where schistosomiasis is endemic. quantitative stool examination using knight's method demonstrated a high prevalence and moderate intensity of schistosoma mansoni infection, and also that the subjects in village iv had a s ... | 1997 | 9196752 |
| factors involved in schistosoma mansoni infection in rural areas of northeast brazil. | two contiguous villages in tracunhaém county (state of pernambuco), endemic for schistosomiasis, were studied: itapinassu (138 inhabitants) and são joaquim (91 inhabitants). agriculture predominates in the former region while ceramics is the main activity in the latter. although no statistical difference was found regarding prevalence, severe infection (> 400 epg) predominated in itapinassu, probably related to the kind of occupation. no association was found between parasite burden and severity ... | 1997 | 9566243 |
| [ecoepidemiology of urban schistosomiasis in itamaracá island, pernambuco, brazil]. | in 1988, 22 autochthonous cases from accidental exposure were registered in forte orange beach, itamaracá island, pernambuco, brazil. all cases occurred in middle-to-upper class individuals who were vacationing in the island. after the cases were identified, the major objective was to find breeding sites of schistosomiasis vectors and correlate the biological factors with the environmental conditions. | 2000 | 10973151 |
| [an outbreak of acute schistosomiasis at porto de galinhas beach, pernambuco, brazil]. | we recently confirmed several cases of acute schistosomiasis in porto de galinhas beach, northeast brazil. a total of 662 patients were diagnosed by parasitological and clinical examinations. the infection likely occurred during the september 7 national holiday, when heavy rainfall flooded the ipojuca river and people were infected when the water covered their yards. families were continuously exposed to infection for a period of three weeks until the water had completely dried up. previous inve ... | 2001 | 11395810 |
| longitudinal study on the natural infection of biomphalaria straminea and b. glabrata by schistosoma mansoni in an endemic area of schistosomiasis in pernambuco, brazil. | the abundance of snail hosts and the rates of infection with schistosoma mansoni were monitored monthly for four years in two representative localities subjected to repeated chemotherapy of infected persons. snail abundance varied from 1.0 to 4.4 collected per person/minute/station for biomphalaria straminea and from 0.1 to 7.0 for b. glabrata. infection rates of snails in nature varied from 0% to 15% for the former and from 0% to 70% for the latter species. human infection increased from 35.5% ... | 2002 | 12118274 |
| studies on the snail vectors of bilharziasis mansoni in north-eastern brazil. | the authors describe the bilharziasis endemic areas in north-eastern brazil, giving the rainfall and general characteristics of the climate. the life-cycles of the two snail vectors-australorbis glabratus and tropicorbis centimetralis-in pernambuco are described. considerable attention is given to the effects on the snails of the annual drought, which causes many of the habitats to dry up and seriously affects the snail life-cycles and survival patterns. the snails are able to populate habitats ... | 1958 | 13573116 |
| molecular identification of symbionts from the pulmonate snail biomphalaria glabrata in brazil. | the icthyosporean, capsaspora owczarzaki, a known predator of schistosoma mansoni sporocysts in vitro, is more prevalent in laboratory-reared strains of the intermediate snail host, biomphalaria glabrata resistant to s. mansoni, than from the susceptible m line strain. we examined whether b. glabrata resistant to the nih-pr-1 strain of s. mansoni from 2 regions in brazil were also host to c. owczarzaki. symbiont presence was examined using hemolymph culturing and nested polymerase chain reaction ... | 2004 | 15357065 |
| spatial distribution of schistosomiasis foci on itamaracá island, pernambuco, brazil. | acute cases of schistosomiasis have been found on the coastal area of pernambuco, brazil, due to environmental disturbances and disorderly occupation of the urban areas. this study identifies and spatially marks the main foci of the snail host species, biomphalaria glabrata on itamaracá island. the chaotic occupation of the beach resorts has favoured the emergence of transmission foci, thus exposing residents and tourists to the risk of infection. a database covering five years of epidemiologica ... | 2004 | 15486640 |
| [spatial analysis of biomphalaria glabrata foci and human cases of mansoni schistosomiasis in porto de galinhas, pernambuco state, brazil, in the year 2000]. | this article provides information on the spatial distribution of schistosomiasis, correlating snail foci with human cases using spatial analysis. the locations studied were merepe iii, pantanal, salinas, and socó, comprising 70% of the populated area of porto de galinhas. malacological and parasitological surveys by a cpqam/ fiocruz team at the location where an epidemic occurred in 2000 identified 15 foci of infected b. glabrata. human cases were also diagnosed and recorded according to residen ... | 2007 | 17221090 |
| assessment of schistosomiasis, through school surveys, in the forest zone of pernambuco, brazil. | this work had the objective of assessing the present epidemiological situation regarding schistosomiasis through performing kato-katz coproscopic tests on representative samples of schoolchildren from each of the 43 municipality of endemic area of the state of pernambuco, brazil. the methodology is recommended by the world health organization to conduct sampled surveys among children at elementary school levels, ideal target group for baseline surveys: (i) schools are accessible; (ii) the greate ... | 2006 | 17308748 |
| [temporary and permanent breeding sites for biomphalaria in jaboatão dos guararapes, pe]. | a malacological survey of permanent and temporary breeding sites was conducted in the piedade neighborhood of jaboatão dos guararapes, pernambuco, between november 2006 and november 2007, with the aim of determining the malacological fauna at this locality, along with the potential for schistosomiasis mansoni transmission. in addition to biomphalaria glabrata (say, 1818), the molluscs drepanotrema cimex (moricand, 1837), pomacea sp and melanoides tuberculatus (muller, 1774) were collected. among ... | 2008 | 18719804 |
| a rationale for schistosomiasis control in elementary schools of the rainforest zone of pernambuco, brazil. | since its beginning in 1999, the schistosomiasis control program within the unified health system (pce-sus) has registered a cumulative coverage of just 20% of the population from the rainforest zone of pernambuco (zmp), northeast brazil. this jeopardizes the accomplishment of the minimum goal of the fifty-fourth world health assembly, resolution wha54.19, of providing treatment for schistosomiasis and soil-transmitted helminthiases (sth) to 75% of school-aged children at risk, which requires at ... | 2009 | 19290040 |
| current epidemiological status of schistosomiasis in the state of pernambuco, brazil. | uncontrolled peripheral urbanisation coupled with environmental degradation has affected the status of schistosomiasis in pernambuco (pe), brazil. this endemic disease continues to perpetuate its transmission in rural areas and has also become a cause for concern in coastal towns of the state. the lack of basic infrastructure (sanitation and health programmes) to support the new urban areas leads to faecal contamination of natural aquatic environments, resulting in consequent infection of vector ... | 2010 | 20721507 |
| spatial distribution of schistosoma mansoni infection before and after chemotherapy with two praziquantel doses in a community of pernambuco, brazil. | praziquantel chemotherapy has been the focus of the schistosomiasis control program in brazil for the past two decades. nevertheless, information on the impact of selective chemotherapy against schistosoma mansoni infection under the conditions confronted by the health teams in endemic municipalities remains scarce. this paper compares the spatial pattern of infection before and after treatment with either a 40 mg/kg or 60 mg/kg dose of praziquantel by determining the intensity of spatial cluste ... | 2010 | 20721508 |
| the prevalence of schistosomiasis in school-aged children as an appropriate indicator of its prevalence in the community. | school-aged children (6-15 years) from the endemic area of pernambuco were evaluated both as a target group for and an indicator of schistosomiasis control in the community. parasitological data were drawn from baseline stool surveys of whole populations that were obtained to diagnose schistosoma mansoni infection. nineteen representative localities were selected for assessing the prevalence of schistosomiasis among individuals in the following age groups: 0-5, 6-15, 16-25, 26-40 and 41-80 years ... | 2010 | 20721509 |
| The endemisation of schistosomiasis in Porto de Galinhas, Pernambuco, Brazil, 10 years after the first epidemic outbreak. | In 2000, after heavy rains and floods in Porto de Galinhas, Pernambuco, Brazil, an outbreak of schistosomiasis was recorded, of which 62.2% (412 cases) were of the acute clinical form. Between 2001-2009, occasional findings of Biomphalaria snails parasitised by Schistosoma mansoni indicated that disease transmission was still occurring. This motivated a new epidemiological survey between August-December 2010 to provide an update of the occurrence of this health hazard and to investigate the proc ... | 2011 | 22124561 |
| spatial analysis of schistosomiasis human cases in the horticultural community of zona da mata of pernambuco state, brazil. | the objective of this study was to describe the spatial distribution of schistosomiasis in horticultural community of natuba, district of vitória de santo antão, pernambuco state. it was conducted a parasitological survey, examined the fecal material of 310 community residents. the cases positive for schistosoma mansoni were geocoded and included in the computerized template of the community, generating maps of spatial distribution with kernel estimators. the results showed a high prevalence of ... | 2012 | 23515773 |
| characterization of the bacterial microbiota of biomphalaria glabrata (say, 1818) (mollusca: gastropoda) from brazil. | roughly 200 000 000 people in 74 countries infected with schistosomes all share the fact that they came in contact freshwater harbouring infected snails. the aim of the study is to characterize the microbiota of wild and laboratory-reared snails of biomphalaria glabrata from pernambuco, brazil. the microbiota of these molluscs was identified biochemically by the vitek 2 automated microbiological system. antimicrobial susceptibility testing was carried out by the disc diffusion method with ß-lact ... | 2013 | 23488866 |
| spatial distribution of schistosomiasis and geohelminthiasis cases in the rural areas of pernambuco, brazil. | the prevalence and intensity of geohelminth infections and schistosomiasis remain high in the rural areas of zona da mata, pernambuco (zmp), brazil, where these parasites still represent a significant public health problem. the present study aimed to spatially assess the occurrences of schistosomiasis and geohelminthiasis in the zmp. | 2012 | 23152349 |
| hepatitis e virus seroprevalence among schistosomiasis patients in northeastern brazil. | hepatitis e virus (hev) can cause chronic infection with rapid progression to liver cirrhosis in immunocompromised patients. hev seroprevalence in patients with schistosoma mansoni in brazil is unknown. we evaluated the prevalence of past or present hev infection in schistosomiasis patients in recife, pernambuco, brazil. a total of 80 patients with schistosoma mansoni were consecutively enrolled in a cross-sectional study. serum samples were tested for the presence of anti-hev igg antibodies by ... | 2017 | 27020708 |
| urban transmission of schistosomiasis: new epidemiological situation in the forest area of pernambuco. | schistosomiasis is considered an endemic disease in vitória de santo antão, pernambuco, a district which has presented both high incidence and prevalence of it for decades. poor environmental conditions lead to contamination of water sources in rural areas, which are used by the population during daily activities, resulting in typical transmission. recently, there has been evidence of vector snails in urban areas, which could set a new model for schistosomiasis transmission in this district. | 2017 | 28146171 |
| first report of schistosomiasis on serrambi beach, ipojuca, state of pernambuco. | the expansion of schistosomiasis to previously unaffected areas is being monitored by identifying new cases and georeferencing outbreaks of vector snails. | 2015 | 26676508 |
| study of the snail intermediate hosts for schistosoma mansoni on itamaracá island in northeast brazil: spatial displacement of biomphalaria glabrata by biomphalaria straminea. | in 2012 a malacological survey of the breeding sites of biomphalaria glabrata and b. straminea , the two intermediate host snails of schistosoma mansoni , was carried out on itamaraca island in pernambuco, brazil. this study has now been extended by studying the competition between the two species. snails were collected and dissected to identify the species and tests were performed to verify s. mansoni infection. student's t test was used to compare the proportion between the two species and the ... | 2014 | 24893012 |
| risk analysis for occurrences of schistosomiasis in the coastal area of porto de galinhas, pernambuco, brazil. | manson's schistosomiasis continues to be a severe public health problem in brazil, where thousands of people live under the risk of contracting this parasitosis. in the northeast of brazil, schistosomiasis has expanded from rural areas to the coast of pernambuco state, where the intermediate host is biomphalaria glabrata snails. this study aims at presenting situational analyses on schistosomiasis at the coastal locality of porto de galinhas, pernambuco, brazil, by determining the risk factors r ... | 2014 | 24559264 |