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Prevalence of serum antibodies to hantavirus in a rural population from the southern state of Santa Catarina, Brazil
Pereira, Gregório Wrublevski;Teixeira, André Martins;Souza, Mirela Silva de;Braga, Alixandre Dias;Santos Junior, Gilberto Sabino dos;Figueiredo, Glauciane Garcia de;Figueiredo, Luiz Tadeu Moraes;Borges, Alessandra Abel;
Revista da Sociedade Brasileira de Medicina Tropical , 2012, DOI: 10.1590/S0037-86822012000100022
Abstract: introduction: rodent-borne hantaviruses cause severe human diseases. we completed a serological survey of hantavirus infection in rural inhabitants of turvo county, in the southern state of santa catarina, brazil, in which seropositivity for hantavirus was correlated to previous disease in the participants. methods: the levels of igg antibodies to hantavirus araraquara in the sera of 257 individuals were determined using an immunoenzymatic assay. results: igg antibodies to hantavirus were found in 2.3% of the participants. all seropositive participants reported previous disease with symptoms suggestive of hantavirus cardiopulmonary syndrome. conclusions: human infections causing unreported cardiopulmonary syndrome probably occur in the southern state of santa catarina.
NOS INTERFLúVIOS DO RURAL E DO URBANO NA AMAZ NIA: O CASO DE CODAJáS-AMAZONAS, BRASIL
Thiago Pimentel MARINHO,Tatiana SCHOR
Revista ACTA Geográfica , 2012,
Abstract: The complexity of the relation city-countryside in the Amazonas state can be associated to the seasonality of the river system, specifically the high and low waters. When the river is in its high season, between the months of May and July the low lands are flooded, uniting rivers and lakes. This phenomenon characterized as interfluves turns places that are of difficult access during dry season easily linked and united by the fluvial network. In this sense, the spatial dynamics modifies itself seasonally and the “ribeirinho”, traditional inhabitants that lives by the rivers, is mobile living in the city or in the countryside, navigating through the rural-urban networks. This mobility characterizes both rural and urban spacialities making there distinction difficult. In order to analyse this relation the production of a aí in Codajas, state of Amazonas. Analysing the a aí of Codajás will show that the counties of Amazonas state, specially those with small cities can not be understood without the social relationship of production that are constructed in this interfluve city-countryside.
Serologic survey of hantavirus in a rural population from the northern State of Mato Grosso, Brazil
Santos, Ioni Oliveira;Figueiredo, Glauciane Garcia de;Figueiredo, Luiz Tadeu Moraes;Azevedo, Maria Regina Andrade de;Novo, Neil Ferreira;Vaz, Celidéia Aparecida Coppi;
Revista da Sociedade Brasileira de Medicina Tropical , 2012, DOI: 10.1590/S0037-86822012005000002
Abstract: introduction: hantavirus is a genus of ribonucleic acid (rna) viruses included in the family bunyaviridae. hantaviruses are rodent-borne zoonoses that, in the last 18 years, became an emergent public health problem in the americas, causing a severe cardiopulmonary syndrome. this disease has no specific treatment and has a high case fatality. the transmission of hantavirus to man occurs by inhaling aerosols of rodent excreta. the aim of this study was to determine the prevalence of antibodies to hantavirus in the population of the rural settlement of tup? in the county of marcelandia, state of mato grosso, brazil. methods: the participants of the serologic survey were visited at their homes and selected randomly among the settlement population. blood samples of the participants were collected by venopuncture. the serum samples were tested by an igg-elisa using an n recombinant protein of araraquara hantavirus as antigen, using the protocol previously established by figueiredo et al. results: igg antibodies to hantavirus were detected in 7 (13%) of the 54 participants. the positivity was higher among men. it was observed that there was an association of seropositivity to hantavirus within the participants born in the south of brazil. conclusions: the results suggest that, in this rural area, everyone is exposed to the same risk of becoming infected with hantavirus, and, therefore, there is a need to intensify surveillance activities and education of the local people to prevent this viral infection.
Prevalencia de anticuerpos anti-hantavirus en 10 comunas de la Novena Región de Chile donde se han diagnosticado casos de infección clínica por hantavirus
Castillo H,Constanza; Sanhueza H,Ligia; T?ger F,Marlies; Mu?oz N,Sergio; Ossa A,Gonzalo; Vial C,Pablo;
Revista médica de Chile , 2002, DOI: 10.4067/S0034-98872002000300002
Abstract: background: thirty six cases of clinical hantavirus cardiopulmonary syndrome occurred in the ix region of chile. most of these patients were young males, farm or timber workers, who lived near the andes mountain chain. aim: to conduct an epidemiological and serosurvey study to determine the seroprevalence of igg antibodies against hantavirus in the general adult population living in rural and urban areas of 10 endemic communities of the ix region of chile. material and methods: a total of 400 subjects were included, 40 of each community, 20 rural residents and 20 urban residents, 20 males and 20 females. results: seroprevalence was 7.5% in melipeuco, 5.0% in lonquimay, 2.5% in curacautin, 2.5% in pucón and 0.0% in the remaining communities. seroprevalence was higher in rural population (2.5%) than in the urban areas (1%). all seropositive subjects worked in farms or forests and observed rodents near their homes or working places. females were affected the same as males and no differences were observed between chilean natives and hispanics. conclusions: prevalence of hantavirus antibodies correlated with the geographic zone (andes mountain chain), overgrowth of wild rodents and exposure to rodent-infested environments (rev méd chile 2002; 130: 251-3)
Prevalencia de anticuerpos anti-hantavirus en 10 comunas de la Novena Región de Chile donde se han diagnosticado casos de infección clínica por hantavirus Seroprevalence of antibodies against hantavirus in 10 communities of the IX Region of Chile where hantavirus cardiopulmonary syndrome cases were reported  [cached]
Constanza Castillo H,Ligia Sanhueza H,Marlies T?ger F,Sergio Mu?oz N
Revista médica de Chile , 2002,
Abstract: Background: Thirty six cases of clinical Hantavirus Cardiopulmonary Syndrome occurred in the IX Region of Chile. Most of these patients were young males, farm or timber workers, who lived near the Andes Mountain chain. Aim: To conduct an epidemiological and serosurvey study to determine the seroprevalence of IgG antibodies against Hantavirus in the general adult population living in rural and urban areas of 10 endemic communities of the IX region of Chile. Material and methods: A total of 400 subjects were included, 40 of each community, 20 rural residents and 20 urban residents, 20 males and 20 females. Results: Seroprevalence was 7.5% in Melipeuco, 5.0% in Lonquimay, 2.5% in Curacautin, 2.5% in Pucón and 0.0% in the remaining communities. Seroprevalence was higher in rural population (2.5%) than in the urban areas (1%). All seropositive subjects worked in farms or forests and observed rodents near their homes or working places. Females were affected the same as males and no differences were observed between Chilean natives and Hispanics. Conclusions: Prevalence of Hantavirus antibodies correlated with the geographic zone (Andes Mountain chain), overgrowth of wild rodents and exposure to rodent-infested environments (Rev Méd Chile 2002; 130: 251-3)
Psychometric properties of the OHIP-14 and prevalence and severity of oral health impacts in a rural riverine population in Amazonas State, Brazil
Cohen-Carneiro, Flávia;Rebelo, Maria Augusta Bessa;Souza-Santos, Reinaldo;Ambrosano, Gláucia Maria Bovi;Salino, Alessandra Valle;Pontes, Danielson Guedes;
Cadernos de Saúde Pública , 2010, DOI: 10.1590/S0102-311X2010000600006
Abstract: the objectives of this study were: (1) test the psychometric properties of ohip-14 in a rural population; and (2) compare the oral health impacts in two riverine communities in the brazilian amazon that were living at different distances from an urban center. data were obtained from a cross-sectional study in a consecutive sample (n = 126). the validity was assessed through the association of ohip with clinical and subjective variables, which showed a more significant association with: pain, caries, need of extraction or endodontic treatment; than with tooth loss, periodontal disease or need of prostheses. the stability and internal consistency were good (icc = 0.97; cronbach's α = 0.89). the prevalence of oral impacts was greater in the community far from the urban center [70.3 (59.9-80.7)] than in the community closer to it [44.3 (30.7-57.7)], and in women [66.7 (56.0-77.3)] in comparison with men [49.1 (35.3-62.7)]. the ohip-14 adapted to rural populations in amazonas state was valid, reproducible, and consistent. there was high prevalence of impacts, especially for riverine communities that lived far from urban centers.
Evidencia clínico epidemiológica de la existencia de síndrome pulmonar por hantavirus en Valdivia-Chile desde 1993
NAVARRETE C.,MARITZA; SALDIAS N.,FRANCISCO; MANCILLA G.,M.V. RITA; ZAROR,T.M. LUIS; FERRES G.,MARCELA;
Revista chilena de infectología , 2000, DOI: 10.4067/S0716-10182000000300007
Abstract: the hantavirus pulmonary syndrome (hps) was described in usa in 1993. cases of hps have been retrospectively diagnosed by serological techniques back to 1959 in usa and to 1980 in argentina. in chile, cases have been reported since 1995. infection with hantavirus was studied in three family groups who were attended at the hospital clínico valdivia as probable severe cases of atypical pneumonia between february and april 1993. igg anti hantavirus antibodies with titles >1/6400, were found in 5 of 7 patients. their relatives were serologically negative. the patients presented different degrees of pulmonary and body damage, hypoxemia, thrombocytopenia and hypoalbuminemia. in some cases, increases in leukocyte counts, in got and ldh plasmatic levels and hemoconcentration, were found. the hps related risk factors found were rurality, farm work surrounding their houses, contact with rodents and their excrements, cleaning of empty rural cottages and warehouses. the presence of hps since 1993 was established in three family groups living in the province of valdivia. these findings indicate that in unexplained cases of acute respiratory distress with epidemiological information of contact with rodents, it is necessary to bear the etiology of hantavirus in mind
Serological markers of hepatitis A, B and C viruses in rural communities of the semiarid Brazilian Northeast
Almeida, Delvone;Tavares-Neto, José;Vitvitski, Ludmila;Almeida, Alessandro;Mello, Caroline;Santana, Diana;Tatsch, Fernando;Paraná, Raymundo;
Brazilian Journal of Infectious Diseases , 2006, DOI: 10.1590/S1413-86702006000500003
Abstract: in the village of cavunge, located in a dry tropical, semiarid rural region of the state of bahia, brazil, a sentinel study on viral hepatitis is underway. we report on the first part of the study. the objective of this study was to determine the prevalence of serological markers for hepatitis a, b and c in the village. cross sectional study. blood samples were tested for serological markers of hepatitis a (hav), b (hbv) and c (hcv) through elisa-iii assay. in hbsag and anti-hcv carriers, hcv-rna and hbv-dna were checked by pcr. the prevalence of anti-hav igg was 83.3% (1,210/1,452), being higher among residents from the village (87.4%) than in residents from the rural area (79.5%); it also higher among individuals older than 10 years of age. the prevalence of hbsag was 2.6% (38/1,476), 9.3% anti-hbc (137/1,476) and 10.5% (155/1,476) anti-hbs of. in more than half (58.1%; 90/155) of anti-hbs carriers, this was the only serological marker found. in 3.7% of the population, (55/1,476), anti-hbc was the only serological marker found. all hbv carriers were infected by genotype a. only 0.4% (6/1,536) presented anti-hcv antibodies and only one of them was viremic, being infected with genotype 1. the prevalence of patients with antibodies against hepatitis a virus in the village of cavunge was high, but the prevalence of b virus was moderate, with only genotype a among hbv carriers. the prevalence of c virus was very low, contrasting with the situation in large brazilian urban centers.
Magnitude da desnutri??o infantil no Estado do Amazonas/AM - Brasil
Alencar, Fernando Helio;Yuyama, Lucia Kiyoko Ozaki;Rodrigues, Eliana Figueiredo;Esteves, Arinete Veras Fontes;Mendon?a, Margareth Maria de Barros;Silva, Wládia de Albuquerque;
Acta Amazonica , 2008, DOI: 10.1590/S0044-59672008000400013
Abstract: in this review the occurrence of the infantile malnutrition was quantified by the pre-scholars children of the different ecosystems of amazonas state in the last decade. they were just included the data of scientific papers that adopted as diagnosis parameter oms criteria (1986) and nchs pattern (1977). the population was represented by 4,030 pre-school children, whom 1.751 native of the metropolitan area of manaus (amazonas) and 2.279 of the rural area. it was evidenced as main manifestation of the malnutrition the growth deficit, reaching 17% and 23% of the children of the urban and rural areas, respectively. there was emphasis for negro river ecosystem as the one of larger nutritional precariousness, which 35% of these children presented h/i (height/age) inappropriate index, followed by the children of the calhas of amazonas and purus (21%) and madeira (16%) rivers. this means to say that these children were submitted to needs process of long-lived. it was verified in all the cities of the rural area, a relative protection of the children to suffer from malnutrition in the first year of their lives. by the results it becomes evident that the children of the rural area of amazonas presented the largest nutritional precariousness specially, of those residents in negro river ecosystem. these results also evidence the heterogeneity of the amazonian, what should be meditated when of the carrying out of programs of alimentary safety and/or implantation of politics of sustainable development.
A retrospective serologic survey of hantavirus infections in the county of Cássia dos Coqueiros, State of S?o Paulo, Brazil
Badra, Soraya Jabur;Maia, Felipe Gon?alves Mota;Figueiredo, Glauciane Garcia;Santos Junior, Gilberto Sabino dos;Campos, Gelse Mazzoni;Figueiredo, Luiz Tadeu Moraes;Passos, Afonso Dinis Costa;
Revista da Sociedade Brasileira de Medicina Tropical , 2012, DOI: 10.1590/S0037-86822012005000005
Abstract: introduction: in recent years, hantavirus infections producing severe diseases have obtained an increased attention from public health authorities from the countries of eurasia to the americas. brazil has reported 1,300 cases of hantavirus cardiopulmonary syndrome (hcps) from 1993 to 2010, with about 80 of them occurring in the northeast of the state of s?o paulo, with 48% fatality rate. araraquara virus was the causative agent of hcps in the region. considering that hantaviruses causing human disease in the americas were unknown until 1993, we have looked for hantavirus infections in the population of cássia dos coqueiros county, northeast of the state of s?o paulo, brazil, before this time. this county has about 2,800 inhabitants and an economy based on agriculture, including cultivation of brachiaria decumbens grass. the grass seeds are an important rodent attraction, facilitating transmission of hantavirus to man. four hcps cases were reported so far in the county. methods: in this study, 1,876 sera collected from 1987 to 1990 were tested for igg to hantavirus by igg-elisa, using the n recombinant protein of araraquara virus as antigen. results: positive results were observed in 89 (4.7%) samples, which were all collected in 1987. the positivity among urban inhabitants was 5.3%, compared with 4.3% among those living in rural areas. conclusions: our results showed that hantavirus infections occurred in cássia dos coqueiros, completely unrecognized, even before hantaviruses were described in the americas.
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