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| Registros recuperados: 57 | |
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| Cruz Romero, Anabel. |
| Los objetivos de esta investigación fueron determinar la distribución espacial e identificar los factores de riesgo asociados a la leptospirosis bovina en el estado de Veracruz, México. Se obtuvieron muestras de sangre de 3,454 bovinos de 54 municipios de las regiones Norte, Centro y Sur del estado, de febrero 2008 a diciembre de 2011. Los sueros se analizaron por medio de la técnica de aglutinación microscópica utilizando 12 serovariedades de Leptospira interrogans, se estimaron las seroprevalencias y los factores de riesgo. La seroprevalencia general fue del 3.9%; sin embargo, entre municipios varió de 0 y 44%. La mayoría de las UP con casos positivos se encontraron en la zona centro de Veracruz, y en los municipios de Cuitláhuac, Papantla, Tlacotalpan... |
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Palavras-chave: Estudio transversal; Bovinos; Serología; Epidemiología; Cross-sectional study; Bovines; Serology; Epidemiology; Agroecosistemas Tropicales; Doctorado. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2336 |
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| Rauber,RH; Flôres,ML; Pereira,CE; Grigulo,M. |
| The present work was carried out to compare Infectious Bronchitis Virus (IBV) antibody titers in serum and egg yolk samples from laying hens. Sixty paired blood and egg samples were collected from laying hens of two farms. Serum samples were frozen, while egg yolk samples were diluted (1:500) before freezing. Serum and yolk samples were tested for the presence of IBV antibodies by indirect ELISA (commercial kit) and titers were compared by a correlation test (alpha=0.05). There was a high correlation (r=0.62) between the two kinds of samples, which means that titers of IBV antibodies in the egg yolk and in serum samples are quite the same. Considering that blood collection causes deep stress that leads to economic losses, and since eggs are collected daily... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antibody; Egg yolk; ELISA; Infectious bronchitis; Serology. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200008 |
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| Megid,J.; Brito,A.F.; Moraes,C.C.G.; Fava,N.; Agottani,J.. |
| Observou-se brucelose canina em quatro canis diferentes. Os canis apresentaram animais com história de aborto, mortalidade em neonatos e nascimentos prematuros. A porcentagem de animais soropositivos para brucelose canina, pela prova de imunodifusão em ágar gel, variou de 4,6 a 57,1%. Observou-se correlação positiva entre porcentagem de animais positivos e aspectos reprodutivos e condições de aglomeração. |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Dog; Brucellosis; Epidemiology; Serology. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09351999000500007 |
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| Merino,J.O.; Cruz,NI. De la; Galvan,G.; León,A.P. De; Burnes,J.. |
| ABSTRACT Epizootic hemorrhagic disease viruses (EHDV) are dsRNA arboviruses transmitted by biting midges of the genus Culicoides that cause disease in domestic and wild ruminants. Epizootic hemorrhagic disease (EHD) is considered the most important infectious disease of white tailed deer (WTD) in North America, some studies in Northeast Mexico reported EHDV-seropositive WTD and EHDV-infected Culicoides vectors. The increasing population of WTD that share habitat with livestock in Northeast México highlights the importance of EHD for the livestock industry in the transboundary region with the U.S. One hundred and twenty two samples from WTD in Tamaulipas state, Mexico were tested by ELISA and RT-PCR for EHDV antibodies and nucleic acid, respectively. Twelve... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Deer; Detection; EHDV; RT-PCR; Serology. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000100077 |
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| Caterino-de-Araujo,Adele; Manuel,Rolanda Carmen Rafael; Bianco,Rosana Del; Santos-Fortuna,Elizabeth; Magri,Mariana Cavalheiro; Silva,Joyce Matie Kinoshita; Bastos,Rui. |
| Human herpesvirus 8 (HHV-8), the etiological agent of Kaposi's sarcoma (KS), is endemic in parts of the sub-Saharan, and KS has increased concomitantly with the HIV/AIDS epidemic. In Mozambique (MZ), no data concerning HHV-8 infection was available, thus the main of this work was to investigate, for the first time, the presence of HHV-8 infection in Maputo, MZ. Latent and lytic HHV-8-specific antibodies were assessed in blood samples from 189 individuals from the Central Hospital of Maputo, MZ, using "in-house" immunofluorescence assays conducted in São Paulo, Brazil. The results obtained were analyzed according to socio-demographic and clinical variables using the Chi-square test and logistic regression. An HHV-8 seropositivity of 1.8% and 9.7% was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Human herpesvirus 8 (HHV-8); Serology; Mozambique; Frequency; Kaposi's sarcoma. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702009000300008 |
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| Cavalcanti,Marta G; Gonçalves,Margareth MI; Barreto,Magali M; Silva,Aline Helen da; Madi,Kalil; Peralta,José Mauro; Igreja,Ricardo P. |
| Genital infection by Schistosoma mansoni is usually misdiagnosed in individuals who reside in, or travel to endemic areas. We describe two cases of genital tumor associated with S. mansoni infection manifested by methrorragy. Surgical specimens revealed leiomyomas in both cases associated with S. mansoni. In one of them, granulomas were found in the ovary and in the other they were found in the uterine tube. Although none presented intestinal/hepatic disease, fecal egg excretion was detected in one. Both had elevated pretreatment antibody reactivity to S. mansoni antigen, but follow-up showed different outcomes. Schistosomiasis should be considered as a diagnosis in individuals with methrorragy residing in or having traveled to endemic areas. Since... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: S. mansoni; Female genital infection; Serology; Low endemic area. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702011000200016 |
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| Percedo,María Irian; Alfonso,P; Frías,María Teresa; Díaz de Arce,Heydi; Barrera,Maritza; Fonseca,O; Castell,Sara. |
| Vaccination against classical swine fever (CSF) is an essential measure for its control in endemic areas, and the Chinese Strain has been used with success in already disease free countries. Nevertheless the complexity of the factors interacting on the epidemiology and control of CSF, when the expected success is not reached with the vaccination of premises, doubts always fall on the vaccine used and the vaccination scheme applied In consecuences, many changes in vaccination scheme by the breeders are frecuently observed whitout positive influence in CSF control. To clarify the CSF recurrence in a herd vaccinated by a different scheme as the one recommended in the national control program, serological samples were taken to different animal groups in three... |
| Tipo: Journal article |
Palavras-chave: Classical swine fever; Antibodies; Vaccination; Swine; Serology; Focus. |
| Ano: 2009 |
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2009000300004 |
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| Merchioratto,Ingryd; Aurélio,Alana de Almeida; Villela,Janice Machado; Stone,Nicole Vieira; Roman,Isac Junior; Traesel,Carolina Kist; Brum,Mário Celso Sperotto. |
| ABSTRACT: The serological responses induced by four commercial inactivated Uruguayan vaccines against bovine alphaherpesviruses (BoHV)-1 and -5 and bovine pestiviruses (BVDV-1, BVDV-2, and HoBiPeV) were evaluated in sheep. Thirty-seven sheep were immunized twice (day 0 and 25) and their serum samples were tested at different intervals (days 0, 25, 40, 60, and 90) post-vaccination (PV). Among the four vaccines tested, only one (G4) could induce the production of moderate neutralizing antibody titers against BoHV-1 and -5 and BVDV-1 and -2. The G3 vaccine showed a neutralizing serological response against the bovine alphaherpesviruses only. The G1 and G2 vaccines produced extremely low levels of antibodies in a few vaccinated animals only (geometric mean... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Serology; Neutralizing antibodies; Vaccine response; Reproductive disease. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000400454 |
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| Marassi,Carla Dray; Fonseca,Leila de Souza; Ristow,Paula; Ferreira,Rachel; Lilenbaum,Walter; Oelemann,Walter M.R.. |
| Paratuberculosis (Johne's disease) is a chronic enteritis in cattle caused by infection with Mycobacterium avium subsp. paratuberculosis (Map). In Brazil, few reports describe the isolation of the organism. The gold standard test for Map is its isolation from tissues or feces. Moreover, bacterial growth is slow and test results are available only after three to five months of incubation Furthermore, shedding of bacilli at levels detectable by fecal culture is irregular and does not occur during the early stages of infection, which compromises the sensitivity of this methodology. The most common immunological tests to identify Map infection are complement fixation test (CFT), agar gel immunodiffusion (AGID) and enzyme-linked immunoassay (ELISA). In Brazil,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Paratuberculosis; Cattle; ELISA; Serology; Diagnosis. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000200004 |
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| Scanavini Neto,H; Ito,NMK; Miyaji,CI; Lima,E de A; Okabayashi,S; Corrêa,ARA; Eleutério,GC; Zuanaze,MA. |
| IBDV Gm 11 (Simbios eleven-molecular group) has been detected since 1997 in many farms of commercial broilers and layers causing high mortality (2 to 15%) and severe macro and microscopic damage in cloacal bursae, spleen, thymus, kidney and liver. Five serial passages of 2050/97-Gm 11 IBDV sample by CAM route in SPF chicken's embryonated eggs did not elicit increased embryo mortality. High mortality (100%) of 21 day-old SPF leghorn chickens and severe bursal and splenic lesions were seen from 24 up to 48 hours after eye-drop inoculation of 2050/97 strain (50 mL of 10-2 dilution of 10% bursae homogenate). Mortality was not detected when vaccinated SPF and broiler chickens were inoculated. One dead bird was found among ten challenged unvaccinated broilers.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Challenge; Histopathology; IBD; Pathogenicity; Serology. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000100006 |
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| Costa,Diego Figueiredo da; Silva,Aline Ferreira da; Brasil,Arthur Willian de Lima; Loureiro,Ana Paula Pereira; Santos,Fabrine Alexandre dos; Azevedo,Sergio Santos de; Lilenbaum,Walter; Alves,Clebert José. |
| ABSTRACT: Sheep breeding is an economic activity of great value for the Brazilian livestock industry, and infectious diseases can significantly compromise its productivity. The aim of this study was to detect Leptospira spp. in mixed breed sheep from a semiarid region of the State of Paraíba, Northeast Brazil. In total, 49 blood and renal tissue samples, as well as 25 urine samples, were collected from 49 sheep in the slaughter line. The microscopic agglutination test (MAT) was used to verify the presence of anti -Leptospira spp. antibodies in blood samples. Renal tissue and urine samples were analyzed by both PCR and bacterial culture. Sero reactivity was observed in 8.2% (4/49) of animals. Three renal samples were positive for leptospiral DNA by PCR... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leptospirosis; Small ruminants; PCR; Serology; Isolation; Slaughterhouse. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200451 |
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| Silva,Rita de Cássia Figueira; Nascimento,Elmiro Rosendo do; Pereira,Virgínia Léo de Almeida; Barreto,Maria Lúcia; Nascimento,Maria da Graça Fichel do. |
| Newcastle disease is characterized by respiratory manifestations in association with nervous and/or digestive symptoms. Its prevention is done by vaccination with live attenuated (lentogenic strains) and/or killed vaccines. The lentogenic strains can lead to strong post-vaccination reaction, principally due to the presence of other pathogenic agents. Among them, Mycoplasma synoviae is worldwide important, mainly in Brazil. The dissemination of this agent in poultry flocks has been achieved due to difficulties in diagnosis and disease reproduction, virulence variations among different M.synoviae strains, and attribution of typical M.synoviae disease manifestation to other disease agents. This experimental study in SPF chicks (Gallus gallus), previously... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vaccine; Serology; Mycoplasma; Newcastle disease. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000200033 |
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| Ceran,Nurgul; Turkoglu,Recai; Erdem,Ilknur; Inan,Asuman; Engin,Derya; Tireli,Hulya; Goktas,Pasa. |
| Brucellosis is a zoonotic infection and has endemic characteristics. Neurobrucellosis is an uncommon complication of this infection. The aim of this study was to present unusual clinical manifestations and to discuss the management and outcome of a series of 18 neurobrucellosis cases. Initial clinical manifestations consist of pseudotumor cerebri in one case, white matter lesions and demyelinating syndrome in three cases, intracranial granuloma in one case, transverse myelitis in two cases, sagittal sinus thrombosis in one case, spinal arachnoiditis in one case, intracranial vasculitis in one case, in addition to meningitis in all cases. Eleven patients were male and seven were female. The most prevalent symptoms were headache (83%) and fever (44%). All... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neurobrucellosis; Serology; Diagnosis; Neuroimaging. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702011000100010 |
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| Registros recuperados: 57 | |
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