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Registros recuperados: 102
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MARKOV CHAIN MODELING OF ENDEMIC CATTLE DISEASES IN THE TROPICS OF MEXICO Ciência Rural
Rojas,José Alfonso Barajas; Riemann,Hans; Franti,Charles.
Endemic diseases measured by prevalence of IgG antibodies by ELISA all showed remarkably stable overall prevalences over a study period of 3 years. This however does not mean that incidence is low or absent. Observed transition from the state of being positive for a disease to the state of being negative and vice versa suggested fairly high incidence rates (and rates of waning antibodies) for all 19 disease agents tested for. In spite of this dynamic situation Markov Chain simulations indicate that a steady prevalence is reached in a fairly short time. Markov Chain simulations may also be useful in elucidating seasonal changes in prevalence.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Prevalence; Markov Chain; México; ELISA.
Ano: 1993 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781993000300014
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Genotypic profile of Listeria monocytogenes isolated in refrigerated chickens in southern Rio Grande do Sul, Brazil Ciência Rural
Mendonça,Karla Sequeira; Michael,Geovana Brenner; Nalério,Élen Silveira; Mendonça,Marcelo; Cardoso,Marisa Ribeiro Itapema; Silva,Wladimir Padilha da.
ABSTRACT: Listeria monocytogenes is of notable concern to the food industry, due to its ubiquitous nature and ability to grow in adverse conditions. This study aimed to determine the genotypic profile of L. monocytogenes strains isolated from refrigerated chickens marketed in the southern part of Rio Grande do Sul, Brazil. The strains of L. monocytogenes isolated were characterized by serotyping and Pulsed Field Gel Electrophoresis (PFGE). Three different serotypes (1/2a, 1/2b and 4e) were evaluated by PFGE, and the macrorestriction patterns utilizing enzymes AscI and ApaI, revealed five different pulsotypes. The presence of such varied genotypic profiles demonstrates the prevalence of L. monocytogenes contamination of chicken processing environments,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Contamination; Pathogen; Prevalence; Serotyping.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000100132
Registros recuperados: 102
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