2014
DOI: 10.1590/1808-1657001132012 View full text |Buy / Rent full text
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Abstract: Neste estudo foram colhidos soros de 255 vacas e 2 touros no período de 2004 a 2009, em intervalos de seis meses, em uma fazenda de gado leiteiro no município de Buriti dos Lopes, Piauí. Pela técnica de soroaglutinação microscópica (SAM), os sorovares de leptospiras encontrados foram Hardjobovis, Hardjoprajitno (Norma), Hardjoprajitno (OMS). Para o controle da leptospirose, foi testada uma vacina contendo os mesmos sorovares encontrados infectando o rebanho. Os resultados mostraram que em bovinos leiteiros na … Show more

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“…No leptospirosis vaccine produced in Brazil includes local strains, instead they include reference strains that could be antigenically distinct from field strains. 7 Even vaccinated animals are not protected against infection and renal colonization by Leptospira . 8 …”
Section: Discussionmentioning
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“…No leptospirosis vaccine produced in Brazil includes local strains, instead they include reference strains that could be antigenically distinct from field strains. 7 Even vaccinated animals are not protected against infection and renal colonization by Leptospira . 8 …”
Section: Discussionmentioning
“…Several leptospirosis vaccines sold commercially in Brazil are produced abroad, imported and only packaged in Brazil. Even those produced in the country use reference Leptospira strains, which are antigenically distinct from those in the field 7 and thus are incapable of promoting effective protection against disease, the infection or the establishment of the renal carrier state when the animals are exposed to local strains. 8 But it must be considered that the main objective of commercial vaccines for livestock is the reduction of reproductive problems.…”
Section: Introductionmentioning
“…A introdução da prática periódica de vacinação de bovinos com as sorovariedades mais comuns no rebanho poderia reduzir os títulos de anticorpos de Leptospira spp. na microrregião estudada [25].…”
Section: Discussionunclassified