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| Silva,Raquel Cirlene da; Mendes,Gabriella da Silva; Rojas,Miguel Angel; Amorim,Ariane Ribeiro; Couceiro,José Nelson; Lupi,Omar; Elabras,José; Pires,Gisele; Valle,Solange; Santos,Norma. |
| Aims: To determine the frequency of viral pathogens causing upper respiratory tract infections in non-hospitalized, symptomatic adults in the city of Rio de Janeiro.Methods:Respiratory samples (nasal/throat swabs) were collected between August 2010 and November 2012 and real time PCR was used to detect different viral pathogens.Results:Viruses were detected in 32.1% (43/134) of samples from 101 patients. Specifically, 9% (12/134) were positive for HBoV, 8.2% (11/134) were positive for HAdV, 5.2% (7/134) were positive for HRV, and 1.5% (2/134) were positive for FLUBV or HMPV, as single infections. HRSV-A, HPIV-3, and HCoV-HKU1 were detected in one (0.75%) sample each. Co-infections were detected in 4.8% (6/134) of the samples. Peaks of viral infections were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Respiratory infection; Viral infection; Viral diagnosis; Epidemiology. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702015000100030 |
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| FAJARDO,THOR V. M.; NISHIJIMA,MARTA; BUSO,JOSÉ A.; TORRES,ANTÔNIO C.; ÁVILA,ANTÔNIO C.; RESENDE,RENATO O.. |
| Garlic viruses often occur in complex infections in nature. In this study, a garlic virus complex, collected in fields in Brazil, was purified. RT-PCR was performed using specific primers designed from the consensus regions of the coat protein genes of Onion yellow dwarf virus, a garlic strain (OYDV-G) and Leek yellow stripe virus (LYSV). cDNA of Garlic common latent virus (GCLV) was synthesized using oligo-dT and random primers. By these procedures individual garlic virus genomes were isolated and sequenced. The nucleotide sequence analysis associated with serological data reveals the presence of two Potyvirus OYDV-G and LYSV, and GCLV, a Carlavirus, simultaneously infecting garlic plants. Deduced amino acid sequences of the Brazilian isolates were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: OYDV-G; LYSV; GCLV; Detection; Coat protein; PCR; Probes; Epidemiology. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582001000300007 |
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| Teles,PFS; Boiago,MM; Frigo,A; Rampazzo,L; Araújo,DN; Kich,JD; Rebelatto,R; Furian,TQ; Stefani,LM. |
| ABSTRACT Brazil is the largest exporter of chicken meat and poultry farming is one of the most important productive segments, despite major losses due to the bacterium Escherichia coli, which is also a zoonotic microorganism. The objetive of this study was to isolate E. coli and to evaluate its transmissibility potential from the field to chicken meat using the Pulsed Field Gel Electrophoresis (PFGE) technique. Environmental samples (poultry litter, soil and water) were collected from broiler farms located in the South of Brazil where the majority of the Brazilian poultry production occurs. In addition, chicken meat (gizzard, heart, drumette and tulip) samples were collected from local supermarkets. As results, 47.36% of the samples were positives for E.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environment; Epidemiology; Microbiology; Public health; Pulsed field gel electrophoresis. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100308 |
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| ROBERTO,SÉRGIO R.; FARIAS,PAULO R. S.; BERGAMIN FILHO,ARMANDO. |
| The spatial dynamics of Citrus Variegated Chlorosis (CVC) was studied in a five-year old commercial orchard of 'Valencia' sweet orange (Citrus sp.) trees, located in the northern region of the state of São Paulo, Brazil. One thousand trees were assessed in 25 rows of 40 trees, planted at 8 x 5 m spacing. Disease incidence data were taken beginning in March 1994 and ending in January 1996, at intervals of four to five months. Disease aggregation was observed through the dispersion index analysis (Ib), which was calculated by dividing the area into quadrants. CVC spatial dynamics was examined using semivariogram analysis, which revealed that the disease was aggregated in the field forming foci of 10 to 14 m. For each well-fitted model, a kriging map was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: CVC; Xylella fastidiosa; Epidemiology. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582002000600007 |
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| Latorre,Bernardo A; Elfar,Karina; Ferrada,Enrique E. |
| Gray mold (GM) caused by Botrytis cinerea is a major disease of grapes (Vitis vinifera) that substantially reduces the yield and quality of grape production in temperate and humid regions of the world. B. cinerea is a necrotrophic fungus that attacks the non-lignified aerial organs of grapes; in particular, berries are highly susceptible during ripening. The polycyclic nature and exponential progress exhibited by GM at the beginning of the its epidemic, as well as the abundant inoculum production, the high dissemination efficiency, the wide host range and the high genetic variability of B. cinerea, explain the difficulties encountered in attempting to control GM. At present, integrated disease management, including cultural and chemical control, is the... |
| Tipo: Journal article |
Palavras-chave: Botryotinia fuckeliana; Bunch rot; Epidemiology; Fungicides; Necrotroph; Vitis vinifera. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000300001 |
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| Paoli,Juliana de; Wortmann,André Castagna; Klein,Mirelli Gabardo; Pereira,Vagner Reinaldo Zingalli Bueno; Cirolini,Adriana Maria; Godoy,Bibiane Armiliato de; Fagundes,Nelson Jurandi Rosa; Wolf,Jonas Michel; Lunge,Vagner Ricardo; Simon,Daniel. |
| ABSTRACT Background Hepatitis B virus (HBV) infection is a major public health problem in Brazil. HBV endemicity is usually moderate to low according to geographic regions, and high prevalence of this virus has been reported in people of some specific Brazilian counties, including those with a strong influence of Italian colonization in southern Brazil. Analysis of HBV diversity and identification of the main risk factors to HBV infection are necessary to understand hepatitis B epidemiology in these high prevalence regions in southern Brazil. Objective To investigate epidemiological characteristics and HBV genotypes and subgenotypes circulating in a specific city with high HBV prevalence. Methods A cross-sectional study was performed with 102 HBV... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: HBV infection; Epidemiology; HBV genotypes; Risk factor; Transmission; Cross-sectional studies. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702018000400294 |
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| Passos-Castilho,Ana Maria; de Sena,Anne; Domingues,Ana Lucia Coutinho; Lopes-Neto,Edmundo Pessoa; Medeiros,Tibério Batista; Granato,Celso Francisco Hernandez; Ferraz,Maria Lúcia. |
| Abstract Background 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 enzyme immunoassay (Wantai anti-HEV IgG, Beijing, China) and for the presence of HEV RNA using real time reverse transcriptase-polymerase chain reaction with primers targeting the HEV ORF2 and ORF3. Clinical and laboratory tests as well as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Epidemiology; Hepatitis E virus; Schistosomiasis; Seroprevalence. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702016000300007 |
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| Headley,Selwyn Arlington; Bodnar,Lívia; Fritzen,Juliana T.T.; Bronkhorst,Dalton Evert; Alfieri,Alice Fernandes; Okano,Werner; Alfieri,Amauri Alcindo. |
| Listeriosis is a disease primarily of ruminants caused by the Gram-positive bacterium Listeria monocytogenes. Ruminants either demonstrate manifestations of the encephalitic, septicemic, or reproductive form of listeriosis. The pathological and molecular findings with encephalitic listeriosis in a 5.5-month-old, male, mixed-breed goat and a 3-year-old Texel-crossed sheep from northern Paraná, Brazil are described. Clinically, the kid demonstrated circling, lateral protrusion of the tongue, head tilt, and convulsions; the ewe presented ataxia, motor incoordination, and lateral decumbency. Brainstem dysfunctions were diagnosed clinically and listeriosis was suspected. Necropsy performed on both animals did not reveal remarkable gross lesions; significant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brainstem dysfunctions; Rhombencephalitis; Neuropathology; Listeriolysin gene; Epidemiology; Listeria monocytogenes. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300036 |
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| Coelho,Antonio Victor Campos; Coelho,Hemílio Fernandes Campos; Arraes,Luiz Cláudio; Crovella,Sergio. |
| Abstract HIV-1 mother-to-child transmission (HIV-1 MTCT), is an important cause of children mortality worldwide. Brazil has been traditionally praised by its HIV/Aids program, which provides free-of-charge care for people living with HIV-1. Using public epidemiology and demographic databases, we aimed at modeling HIV-1 MTCT prevalence in Brazil through the years (1994-2016) and elaborate a statistical model for forecasting, contributing to HIV-1 epidemiologic surveillance and healthcare decision-making. We downloaded sets of live births and mothers' data alongside HIV-1 cases notification in children one year old or less. Through time series modeling, we estimated prevalence along the years in Brazil, and observed a remarkable decrease of HIV-1 MTCT... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: HIV-1; Vertical transmission; Perinatal transmission; Biostatistics; Epidemiology; Forecasting. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702019000400218 |
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| Cristiano,MP; Cardoso,DC. |
| The present study aimed to acquire knowledge regarding some aspects of the epidemiology and injuries provoked by honeybees and caterpillars in southern Santa Catarina State, Brazil. Epidemiological information concerning accidents with both animals was prospectively collected from the System of Injury Notification Information (SINAN) files of the Municipal Health Secretary of the Criciúma region, Brazil. Between 1994 and 2006, 203 cases of accidents were registered, 149 provoked by honeybees (73.39%) and 54 by caterpillars (26.61%). The majority of the victims (200 cases) presented full recovery, two cases presented sequelae after recovery, and only one death was recorded in a case involving honeybee injury. The high frequency of victim recovery suggests... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Epidemiology; Honeybees; Caterpillars; Poisonous animals; Accidents; Brazil. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992008000400013 |
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| Portari-Filho,Luiz H.; Álvares-da-Silva,Mario R.; Gonzalez,Aline; Ferreira,Adalgisa P.; Nogueira,Cristiane V.; Mendes-Correa,Maria C.; Lima,José M.; Lopes,Edmundo P.; Brandão,Carlos E.; Ivantes,Cláudia; Lyra,André; Lindenberg,Andreia; Ferraz,Maria L.. |
| ABSTRACT Background: Hepatitis C is an important health problem. In Brazil, 1-2 million people are infected. Despite this expressive number, and the availability of very successful treatment, many patients remained undiagnosed mainly because of the asymptomatic nature of the infection. Objectives: To describe epidemiological characteristics of HCV-infected patients seen at referral centers in Brazil, the source of referral, and the time spanned to reach a reference center, in order to improve the identification of undiagnosed patients. Methods: Multicenter observational, cross-sectional study carried out in 15 centers of Brazil, between January/2016 and June/2017. Data of patients with a confirmed diagnosis (anti-HCV and HCV-RNA) were collected by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Epidemiology; Hepatitis C; HCV; Brazil. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702019000100034 |
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| Registros recuperados: 316 | |
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