scholarly journals Amblyomma cajennense infestation on horses in two microregions of the state of Rio de Janeiro, Brazil

2013 ◽  
Vol 22 (2) ◽  
pp. 235-242 ◽  
Author(s):  
Marcus Sandes Pires ◽  
Tiago Marques dos Santos ◽  
Huarrisson Azevedo Santos ◽  
Joice Aparecida Rezende Vilela ◽  
Maristela Peckle Peixoto ◽  
...  

The objective of this study was to evaluate factors associated with infestation by Amblyomma cajennense on horses in two microregions of the state of Rio de Janeiro. Horses on 62 farms in the municipalities of the Itaguaí and Serrana microregions were evaluated between January and May 2009. The animals were examined to determine the presence of ticks and infestation level. The animals' rearing and management were assessed on each farm property using an epidemiological questionnaire. Out of the 635 horses evaluated, 41.6% were infested with A. cajennense. It was observed that farms in low-altitude regions (OR=3.69; CI: 2.3-5.8), with unsatisfactory zootechnical and sanitary management (OR=5.92; CI: 3.8-9.2) and an extensive rearing system (OR=4.25; CI: 2.1-8.5) were factors associated with tick infestation (p < 0.05) and also with cases of high infestation on horses. Use of chemical acaricides on horses was also associated with infestation (p < 0.05); the owners described different therapeutic approaches with different treatment intervals. From the present study, low altitudes, unsatisfactory management, extensive rearing and inappropriate use of acaricide products were factors associated with occurrences of A. cajennense at different infestation levels on horses in these municipalities.

2014 ◽  
Vol 17 (1) ◽  
pp. 45-58 ◽  
Author(s):  
Daniele Marano ◽  
Silvana Granado Nogueira da Gama ◽  
Rosa Maria Soares Madeira Domingues ◽  
Paulo Roberto Borges de Souza Junior

OBJECTIVE: To assess the prevalence and potential factors associated with pre-pregnancy nutritional status of women. METHODS: This is a cross-sectional study carried out between December 2007 and November 2008 with 1,535 women in the first trimester of pregnancy and randomly selected in health units of the Brazilian public health system (SUS) in the municipalities of Queimados and Petrópolis in the State of Rio de Janeiro. The diagnosis of nutritional deviations was based on the Body Mass Index, according to the classification of the Institute of Medicine, and the following categories were obtained: underweight, normal weight, overweight and obesity. In the statistical analysis, the multinomial logistic regression model was used and an odds ratio and confidence interval of 95% were estimated. RESULTS: The sample included women between 13 and 45 years. The prevalence of underweight, overweight and obesity were 10, 18 and 11%, respectively. Women living in Queimados, adolescents, women who did not live with a partner and smokers had a higher proportion of low pre-pregnancy weight. There was an association between hypertension, overweight and obesity. Adolescents presented lower chance to overweight and obesity. Living in Queimados reduced the odds of overweight. CONCLUSION: The proportion of pre-pregnancy nutritional deviations was high, and recognizing factors that lead to them is very important for an early identification of women at nutritional risk, with view to interventions to reduce the adverse effects of malnutrition on maternal and child health.


2016 ◽  
Vol 36 (10) ◽  
pp. 939-946 ◽  
Author(s):  
Erica C.R. Roier ◽  
◽  
Renata L. Costa ◽  
Marcus S. Pires ◽  
Joice A.R. Vilela ◽  
...  

ABSTRACT: Equine neorickettsiosis (EN), also known as Potomac Horse Fever, is a non-contagious disease caused by the bacterium Neorickettsia risticii of the Anaplasmataceae family. The objectives of this study were to detect the presence of anti-N. risticii antibodies by the indirect immunofluorescence assay (IFA) and of its DNA by qPCR in equids at high and low altitude regions in the State of Rio de Janeiro, Brazil, and to identify factors associated with seropositive equids by multiple logistic regression analysis. The frequency of anti-N. risticii antibodies was 16.05% (n=113/704). The animal age and breeding region were the factors that influenced the seropositivity rate for N. risticii in the equids (p<0.05). Equids from the lowland region had higher seropositivity (p<0.05; OR=5.87) compared to those of the mountain region. The presence of snails on the farm was a factor associated with this result (p<0.05; OR=2.88). In the lowland region, age of the animal and site of breeding were protective factors for the detection of antibodies anti-N. risticii in equids, with lower frequency of seropositivity in younger animals (p<0.05; OR=0.06) and in animals raised in dry areas (p<0.05; OR=0.22). The presence of the target DNA of N. risticii by qPCR was not observed in any of the samples tested. The existence of seropositive equids for N. risticii demonstrates a possible circulation of this agent in the studied area, and that the age related characteristics and equids breeding region are important factors regarding seropositivity in the State of Rio de Janeiro.


2011 ◽  
Vol 20 (3) ◽  
pp. 235-241 ◽  
Author(s):  
Tiago Marques dos Santos ◽  
Erica Cristina Rocha Roier ◽  
Huarrisson Azevedo Santos ◽  
Marcus Sandes Pires ◽  
Joice Aparecida Rezende Vilela ◽  
...  

Serum samples from 714 equids of Itaguaí and Serrana microregions, Rio de Janeiro, southeastern Brazil, were examined by indirect fluorescent antibody test (titer 1:80) for Theileria equi. The prevalence in the microregions and factors associated with seropositivity were evaluated and the prevalence ratio (PR) calculated. The overall prevalence of T. equi infection was 81.09% (n = 579), with higher prevalence (p < 0.05) in the Itaguaí (85.43%) when compared to Serrana microregion (76.92%). The geographic area, altitude, farming condition and area of origin of equids were associated (p < 0.05) with seropositivity for T. equi. Equids reared in the Itaguaí microregion (PR = 1.11, p = 0.003) and at altitudes below 500 m (PR = 1.10; p = 0,014) were more likely to be seropositive for T. equi. Furthermore, when equids were born in the farm (PR = 1.10, p = 0.008) and reared with poor farming conditions (PR = 1.13, p = 0.018) they were more likely to be exposed to T. equi. The main ticks found on equids were Amblyomma cajennense and Dermacentor (Anocentor) nitens. The microregions studied are endemic areas for equine theileriosis and there exists enzootic stability for T. equi. Only factors related to the collection area of serum samples influenced the seropositivity of equids for T. equi in that region.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Marcella Cini Oliveira ◽  
Tatiana de Araujo Eleuterio ◽  
Allan Bruno de Andrade Corrêa ◽  
Lucas Dalsenter Romano da Silva ◽  
Renata Coelho Rodrigues ◽  
...  

2021 ◽  
Author(s):  
Marcella Cini Oliveira ◽  
Tatiana de Araujo Eleuterio ◽  
Allan Bruno de Andrade Corrêa ◽  
Lucas Dalsenter Romano da Silva ◽  
Renata Coelho Rodrigues ◽  
...  

Abstract Background: We analyzed the factors associated with death in confirmed cases of COVID-19 in the state of Rio de Janeiro. This cross-sectional study evaluated the association between individual demographic, clinical, and epidemiological variables and the outcome (death) using data from the Unified Health System information systems.Methods: We used the extreme boosting gradient (XGBoost) model to analyze the data, which uses decision trees weighted by the estimation difficulty. To evaluate the relevance of each independent variable, we used the SHapley Additive exPlanations (SHAP) metric. From the probabilities generated by the XGBoost model, we transformed the data to the logarithm of odds to estimate the odds ratio for each independent variable.Results: This study showed that older individuals of black race/skin color with heart disease or diabetes who had dyspnea or fever were more likely to die.Conclusions: The early identification of patients who may progress to a more severe form of the disease can help improve the clinical management of patients with COVID-19 and is thus essential to reduce the lethality of the disease.


2019 ◽  
Vol 53 ◽  
pp. 89 ◽  
Author(s):  
Claudia Caminha Escosteguy ◽  
Alessandra Gonçalves Lisbôa Pereira ◽  
Marcio Renan Vinícius Espínola Marques ◽  
Tatiana Rodrigues de Araujo Lima ◽  
Rafael Mello Galliez ◽  
...  

OBJECTIVE: Describe the clinical and epidemiological profile of confirmed cases of yellow fever whose patients were hospitalized in a general hospital for infectious diseases in the State of Rio de Janeiro, Brazil, from March 11, 2017 to June 15, 2018, during a recent outbreak and factors associated with death. METHODS: This is a retrospective observational study with analysis of secondary databases of local epidemiological surveillance system, and complementary data collection from epidemiological investigation records and clinical records. Study variables included demographic, epidemiological, clinical, and laboratory data. A descriptive statistical analysis and a bivariate and multivariate analysis by logistic regression were performed to analyze factors associated with death. RESULTS: Fifty-two patients diagnosed with yellow fever were hospitalized, 86.5% male patients, median age 49.5 years, 40.4% rural workers. The most frequent signs and symptoms were fever (90.4%), jaundice (86.5%), nausea and/or vomiting (69.2%), changes in renal excretion (53.8%), bleeding (50%), and abdominal pain (48.1%), with comorbidity in 38.5% of all cases. The lethality rate was 40.4%. Factors significantly associated with a higher chance of death in the bivariate analysis were: bleeding, changes in renal excretion, and maximum values of direct bilirubin, aspartate aminotransferase (AST), alanine aminotransferase (ALT), urea, and creatinine. In the multivariate analysis by logistic regression, only changes in renal excretion and ALT remained significant predictors of higher chance of death. A threshold effect was also observed for AST. The cutoff points identified as high risk for death were ALT > 4,000 U/L and AST > 6,000 U/L. CONCLUSIONS: This study contributed to the knowledge on the profile of confirmed cases of high severity yellow fever. The main factors associated with death were changes in renal excretion and elevated serum transaminases, especially ALT. High lethality emphasizes the need for early diagnosis and treatment, and the importance of increasing vaccination coverage.


2017 ◽  
Vol 4 (4) ◽  
pp. 180-209 ◽  
Author(s):  
Sarah L. Desmarais ◽  
Joseph Simons-Rudolph ◽  
Christine Shahan Brugh ◽  
Eileen Schilling ◽  
Chad Hoggan

Revista Prumo ◽  
2019 ◽  
Vol 4 (6) ◽  
pp. 42-53
Author(s):  
Ariane Rego de Paiva ◽  
Roberta Gomes Thomé

This work presents a problematization about the local integration of refugees as one of the lasting solutions proposed by the UNHCR and the present challenges for the consolidation of policies of social protection for this segment in the state of Rio de Janeiro. This study was made through the bibliographic analisis and systematization of a workshop about the thematics carried with governamental and non-governamental agents and leaderships in the refugee population in the occasion of the seminar Mobility Crossroads: knowledge and practices in protection policies for refugee populations and migrants in vulnerable situation, which occurred in November 2017, organized by Cátedra Sérgio Vieira de Mello of PUC-Rio.


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