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Registros recuperados: 24
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A study of risk factors associated with the prevalence of Cryptosporidium in villages around Lake Atitlan, Guatemala BJID
Laubach,H. E.; Bentley,C. Z.; Ginter,E. L.; Spalter,J. S.; Jensen,L. A..
Cryptosporidium parvum is an endemic, zoonotic coccidian parasitosis that is highly prevalent in third-world countries where waterborne fecal contamination of food and drink or person-to-person contact with oocysts are the most common methods of transmission of the enteric protozoan. This type of transmission of the parasite made the villages around Lake Atitlan, Guatemala a unique site to compare environmental risk factors with the level of Cryptosporidium infections in the local residents. The study was carried out in two villages, San Antonio Palopo and Santa Catarina Palopo, located in the highlands above the shores of the lake. Smears from stool specimens of patients with gastroenteritis were processed using Kinyoun's modified acid-fast stain and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cryptosporidium; Disease transmission; Guatemala; Risk factors; Lake-water.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000400008
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A study on the host range of tungro and orange leaf viruses of rice International Rice Research Institute
Wathanakul, Luansark.
35 leaves : photos. Thesis (M.S.) -- University of the Philippines
Tipo: Thesis Palavras-chave: Rice; Plant viruses; Rice tungro bacilliform virus; Rice tungro spherical virus; Host range; Vectors; Disease transmission.
Ano: 1964 URL: http://hdl.handle.net/123456789/368
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ARTRITE encefalite caprina a vírus (CAEV). Infoteca-e
Transmissão; Sintomas; Diagnóstico; Tratamento; Controle e prevenção.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: CAEV; Artrite Encefalite Caprina; Caprino; Doença animal; Sintoma; Transmissão de doença; Goats; Caprine arthritis encephalit virus; Lentivirus; Disease transmission; Disease control.
Ano: 2001 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/530449
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Bats and their role in human rabies epidemiology in the Americas J. Venom. Anim. Toxins incl. Trop. Dis.
Dantas-Torres,F..
Bats are very interesting animals: they are the unique flying mammals, have developed a highly sophisticated echolocation system, and have become specialized to eat different types of diets. Hematophagous (vampire) bats are those specialized to feed solely on blood and have served as a source of inspiration for researchers as well as for writers. Vampire bat attacks on humans have moved from the realm of science fiction to reality in Latin America and bats (including non-hematophagous ones) have assumed an important role in the transmission of rabies virus to humans. This article discusses the emerging role of bats as rabies virus transmitters, with particular emphasis on the role of hematophagous bats in the epidemiology of human rabies in Latin America....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rabies; Epidemiology; Disease transmission; Chiroptera.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992008000200002
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Ceratites, ceratoconjuntivites e tumores de olhos em ovinos e caprinos, suas prováveis causas e implicações. Infoteca-e
SILVA, M. U. D. e; SILVA, E. D. F. da..
Causas; Sinais clinicos; Transmissao; Tratamento e profilaxia.
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Ceratoconjuntivite; Caprino; Doença animal; Bactéria; Ceratite; Olho; Infecção; Transmissão de doença; Goats; Sheep; Animal diseases; Keratoconjunctivitis; Infection; Disease transmission; Eye diseases.
Ano: 1986 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/945354
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Characterization of Vibrio isolated from Crassostrea gigas spat suffering summer mortality outbreaks (slides) ArchiMer
Gay, Melanie; Renault, Tristan; Le Roux, Frédérique.
The pathogens related to summer mortality outbreaks are a herpes virus and two bacterial strains one belonging to Vibrio splendidus biovar II and the other to Vibrio splendidus spp. However, the feature pathogen/opportunist of these strains is still unknown. Several strains belonging to the genus Vibrio have been identified as pathogen for different mollusk species. In the context of the French program Morest, experiments of cohabitation have been used to demonstrate the potential presence of a transmissible infectious agent in batches of oysters suffering from summer mortality outbreaks. More than one hundred Vibrio strains have been isolated from these experiments. These strains have been phenotypically and genotypically characterized. Their virulence...
Tipo: Text Palavras-chave: Vibrio splendidus; Vibrio lentus; Crassostrea gigas; Summer; Spat; Pathogen; Disease transmission; Oyster culture; Mortality; Microbial contamination; Oysters.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/2003/acte-3343.pdf
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Classificação macroscópica dos graus de atrofia dos cornetos na rinite atrófica dos suínos. Infoteca-e
MARTINS, E.; SCARSI, R. M.; PIFFER, I. A..
1985
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Contágio; Contagion; Doença animal; Suíno; Transmissão de doença; Rinite atrófica; Doença respiratória; Animal diseases; Swine; Rhinitis; Respiratory tract diseases; Disease transmission.
Ano: 1985 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/435486
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Climate Variability Reveals Complex Events for Tularemia Dynamics in Man and Mammals Ecology and Society
Palo, Thomas R; Mid-Sweden University; Thomas.palo@miun.se.
Tularemia is caused by the bacterium Francisella tularensis, but the natural reservoir is unknown and environmental conditions for outbreaks in mammals and man are poorly understood. The present study analyzed the synchrony between the North Atlantic Oscillation (NAO) index, the number of human cases of tularemia reported in Sweden, and the density of hares. Climate variation at a lag of 2 yr explained as a single factor ~ 27% of the variation in the number of tularemia cases over time. A low NAO index, indicating cold winters, and low water flow in rivers during the coming summer were associated with high numbers of human cases of tularemia 2 yr later. The number of mountain hares was not related to NAO or to the number of cases of tularemia. The change...
Tipo: Peer-Reviewed Reports Palavras-chave: Tularemia; Climate; North Atlantic Oscillation index; Disease transmission; Global warming; Francisella tularensis; Lepus timidus.
Ano: 2005
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Design and validation of a mobile air filter testing laboratory for animal agricultural applications CIGR Journal
Smith, Benjamin; Ramirez, Brett; Hoff, Steven; Harmon, Jay; Stinn, John.
The US swine industry is shifting towards filtered fresh-air ventilation systems that use pleated filters to improve breeding herd health and reduce airborne disease outbreak frequency. Loaded filters reduce airflow causing a poor environment and elevated energy use. Typical axial fans cannot efficiently maintain the rated differential pressure (DP; 100 Pa) for pleated filters; hence, a lower design filter DP (37 Pa) is used and consequently, more filters are required to achieve design maximum ventilation. Large, common filter banks for multiple staged fans presents significant challenges in using continuous DP measurement to assess filter life, making it impossible to separate filter loading DP from overall airflow DP. A mobile air filter testing (MAFT)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biosecurity; Disease transmission; PRRS virus; Swine; Ventilation.
Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5458
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Effects of planting arrangement on the occurrence of tungro virus infection in mixtures of resistant and susceptible varieties International Rice Research Institute
Shibata, Y.; Cabunagan, R. C.; Choi, I. R..
p.21-22
Palavras-chave: Tungro virus; Infection; Varieties; Sowing methods; Mixed cropping; Disease transmission; Nephotettix virescens.
Ano: 2007 URL: http://www.irri.org/publications/irrn/pdfs/vol32no1/pest.pdf
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Enfermidades e microrganismos passíveis de transmissão pela carne, leite e derivados de caprinos e ovinos. Infoteca-e
ALVES, F. S. F.; CHAPAVAL, L.; PINHEIRO, R. R..
Este documento faz referência a um conjunto de informações sucintas, claras e sistematizadas sobre a problemática das doenças de origem alimentar como forma de orientar o leitor sobre uma ampla e complexa temática ainda bastante dispersa. Os autores, não pretendem de esgotar este assunto, uma vez que, para os mais interessados, este documento não exclui a necessidade de pesquisa e de aprofundamento destas matérias na extensa bibliografia especializada existente.
Tipo: Documentos (INFOTECA-E) Palavras-chave: Caprino; Ovino; Segurança alimentar; Produto de origem animal; Transmissão de doença; Higiene de Alimento; Toxicologia de alimento; Higiene de Alimento; Food contamination; Sheep; Goats; Disease transmission; Food hygiene; Meat hygiene; Dairy hygiene.
Ano: 2006 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/533319
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Epidemiological and clinical characteristics of cutaneous leishmaniasis and their relationship with the laboratory data, south of Brazil BJID
Curti,Maura Cristiani de Moura; Silveira,Thaís Gomes Verzignassi; Arraes,Sandra Mara Alessi Aristides; Bertolini,Dennis Armando; Zanzarini,Paulo Donizeti; Venazzi,Eneide Aparecida Sabaini; Fernandes,Andrea Cláudia Silva; Teixeira,Jorge Juarez Vieira; Lonardoni,Maria Valdrinez Campana.
OBJECTIVE: To evaluate clinical, epidemiological and laboratorial aspects for the understanding of the disease characteristics and its relationship with diagnostic tests. METHODS: A retrospective, descriptive and analytical study involving 2,660 American cutaneous leishmaniasis (ACL) suspected patients from southern Brazil was undertaken between April 1986 and December 2005. Data on population characteristics and laboratory tests were obtained. Diagnostic laboratory tests used were direct search for Leishmania spp. (DS), Montenegro skin test (MST) and indirect immunofluorescent assay (IFA). RESULTS: 62.3% of patients were positive for at least one laboratory test. DS test was positive in 65.1%; MST in 92.3% and IFA in 70.0%. Although Cohen's Kappa test did...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Clinical laboratory techniques; Disease transmission; Infectious; Cutaneous leishmaniasis; Epidemiology.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702011000100003
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HIV-1 viremia during the first 28 weeks of pregnancy is not associated with mother-to-child transmission BJID
Senise,J.F.; Palacios,R.; Tanno,Z.N.; Lunardi,L.; Waghabi,G.R.; Vaz,M.J.R.; Diaz,RS.; Castelo,A..
It is currently recommended that antiretroviral prophylaxis to prevent mother-to-child transmission (MTCT) of HIV be initiated at 14 weeks of gestation. However, the relevance of early-gestation HIV viral load level for intrauterine MTCT is unknown. The objective of this study was to determine the relationship between prenatal maternal viral load and intrauterine MTCT. Records of HIV-infected pregnant women in two centers in Brazil, from 1999 to 2004 were analyzed. Three pregnancy periods were considered: earlier than 14 weeks, 14 to 27 6/7 weeks, and 28 weeks of gestation or more. Peripartum HIV exposure was also computed. Maximum viral load in each period was the measure of HIV exposure. Four hundred fifty-seven HIV-infected pregnant women were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: HIV-1; Disease transmission; Vertical transmission; Antiretroviral therapy; Highly active; Brazil; Viral load.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702006000400009
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Mancha anelar. Infoteca-e
CARVALHO, A. M. da S.; LIMA, C. S.; SILVA, C. de F. B. da.
bitstream/item/210989/1/CLV19018.pdf
Tipo: Capítulo em livro técnico (INFOTECA-E) Palavras-chave: Mamoeiro; Mancha Anelar; Virose Vegetal; Doença; Pulgão; Transmissão de Doença; Disease transmission.
Ano: 2019 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1117842
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Prognostic markers of symptomatic congenital cytomegalovirus infection BJID
Romanelli,Roberta Maia de Castro; Magny,Jean François; Jacquemard,François.
The objective of this research was to identify maternal and fetal characteristics as prognostic markers of congenital cytomegalovirus (CMV) infection. This is a descriptive study of 13 cases of congenital CMV infection referred to Institute de Puericulture et Perinatologie de Paris (IPP) from January 2005 to October 2006. Amniotic fluid puncture was performed to research CMV polimerase chain reaction (PCR). Cordocentesis and cord blood samples at delivery were also analyzed to determinate fetal platelets count, GGT, ASAT, ALAT, CMV-DNA and IgM antibody. Variables of symptomatic and asymptomatic infants were then compared. Data were analyzed by SPSS - 15.0. Mean gestational age of amniocentesis was 24.6 weeks and there was no difference of mean viral load...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cytomegalovirus; Disease transmission; Vertical; Prenatal diagnosis; Prognosis.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702008000100009
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Salinity influences disease-induced mortality of the oyster Crassostrea gigas and infectivity of the ostreid herpesvirus 1 (OsHV-1) ArchiMer
Fuhrmann, Marine; Petton, Bruno; Quillien, Virgile; Faury, Nicole; Morga, Benjamin; Pernet, Fabrice.
Mortality of young Pacific oysters Crassostrea gigas associated with the ostreid herpesvirus 1 (OsHV-1) is occurring worldwide. Here, we examined for the first time the effect of salinity on OsHV-1 transmission and disease-related mortality of C. gigas, as well as salinity-related effects on the pathogen itself. To obtain donors for OsHV-1 transmission, we transferred laboratory-raised oysters to an estuary during a disease outbreak and then back to the laboratory. Oysters that tested OsHV-1 positive were placed in seawater tanks (35‰, 21°C). Water from these tanks was used to infect naïve oysters in 2 experimental setups: (1) oysters acclimated or non-acclimated to a salinity of 10, 15, 25 and 35‰ and (2) oysters acclimated to a salinity of 25‰; the...
Tipo: Text Palavras-chave: Bivalve; Herpesviridae; Infection; Disease transmission; Risk analysis.
Ano: 2016 URL: https://archimer.ifremer.fr/doc/00350/46100/45781.pdf
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Seleção do sêmen de reprodutores portadores do vírus da artrite encefalite caprina através da técnica de reação em cadeia da polimerase. Infoteca-e
ANDRIOLI, A.; GOUVEIA, A. M. G.; PINHEIRO, R. R..
A partir de 1976, importações de caprinos de raças exóticas, procedentes de vários países, buscaram a introdução de potencial genético leiteiro, tendo ocorrido também a efetiva introdução de agentes infecciosos no Brasil pela importação de caprinos sem adequados critérios sanitários, com consequente dispersão de doenças infecciosas entre os rebanhos nacionais, dentre elas a CAE - artrite encefalite caprina. Os avanços das técnicas de conservação de sêmen, aliados ao aumento da importância econ0mica da caprinocultura favorecem o seu intercâmbio nacional e internacional. Somando-se a isto, a inseminação artificial possibilita a concepção de um expressivo número de fêmeas, num curta intervalo de tempo, no entanto, pouco se sabe do risco da transição de...
Tipo: Documentos (INFOTECA-E) Palavras-chave: CAEV; Artrite Encefalite Caprina; Caprino; Reprodução animal; Sêmen; Seleção; Transmissão de doença; Goats; Reproduction; PCR; Semen diluents; Disease transmission; Infection; Caprine arthritis encephalit virus.
Ano: 2003 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/531309
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Selection of bacteria enhancing the growth rate of axenically hatched rotifers (<i>Brachionus plicatilis</i>) OMA
Rombaut, G.; Dhert, P.; Vandenberghe, J.; Verschuere, L.; Sorgeloos, P.; Verstraete, W..
The effect of bacterial strains on the growth rate of rotifers, Brachionus plicatilis, was determined under monoxenic conditions. The first objective was to obtain sterile rotifer cultures starting from rotifer resting eggs using merthiolate or glutaraldehyde as disinfectant. Sterile rotifer cultures were obtained, without affecting the hatching ability of the resting eggs, when 0.05 µl/l glutaraldehyde was used. This disinfection procedure was used to examine the effect of 20 bacterial strains, isolated from well-performing live-feed production systems, on the population growth rate of rotifers cultured under monoxenic conditions. Five out of the 20 bacterial strains tested were able to improve significantly the asexual reproduction of rotifers. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture; Aquaculture techniques; Bacterial diseases; Disease transmission; Disinfection; Hatching; Zooplankton; Zooplankton culture; Brachionus plicatilis; Rotifera.
Ano: 1999 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=4030
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Socioeconomic Determinants of Disease Transmission in Cambodia AgEcon
Deolalikar, Anil B.; Laxminarayan, Ramanan.
The process of acquiring an infection has two components: first, exposure through proximity to another infected individual, and second, transmission of the disease. Earlier studies of the socioeconomic factors that affect the probability of acquiring an illness assume uniform exposure to infected individuals and may therefore result in biased estimates. This paper develops an empirical model, consistent with epidemiological models of spread of infections, to estimate the impact of socioeconomic variables on the extent of disease transmission within villages in Cambodia. Data from the 1997 Cambodia Socioeconomic Survey are used in this analysis.
Tipo: Working or Discussion Paper Palavras-chave: Disease transmission; Sanitation; Infection; Public health; Health Economics and Policy; C1; I1; O1.
Ano: 2000 URL: http://purl.umn.edu/10695
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Some studies on the smut, Ustilago coicis Bref. of Coix lachryma-jobi in Thailand Thai Agricultural
Somkiat Titatarn.
Palavras-chave: Corn; Maize; Smuts; Ustilago coicis; Coix lachryma-jobi; Symptoms; Disease transmission; ข้าวโพด; โรคราเขม่าดำ; ลูกเดือย.
Ano: 1982 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4099
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