Surveillance of Schmallenberg virus in cattle populations in Northeastern Brazil.

IF 1.7 3区农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Tropical animal health and production Pub Date : 2024-12-19 DOI:10.1007/s11250-024-04255-w

Jana Kelly Dos Santos, Sergio Alves do Nascimento, Karla Patrícia Chaves Silva, Elizabeth Sampaio Medeiros, Rita Cássia de Carvalho Maia, José Wilton Pinheiro Junior

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Abstract

The objective of this study was to conduct a serological investigation of Schmallenberg virus (SBV) infection in cattle raised in the State of Alagoas. A total of 460 serum samples from the Agricultural Defense Agency of Alagoas (ADEAL) serum bank were analyzed. These samples were collected from unvaccinated cattle on 100 properties across 99 municipalities in Alagoas, representing the three mesoregions: Agreste, Leste, and Sertão. Serological diagnosis was performed using commercial indirect Enzyme-Linked Immunosorbent Assay (ELISA) kit. The results showed that 0.87% (4 out of 460) of the samples yielded questionable results in the indirect ELISA (with calculated percentages > 50.00% and ≤ 60.00%). Upon further testing with competitive ELISA, only one sample tested positive. These findings underscore the need to strengthen regional surveillance and control strategies for emerging pathogens. Additionally, further studies, including viral isolation from both ruminants and vectors, are crucial to confirm the circulation of this pathogen. Such comprehensive investigations are essential for improving our understanding of SBV dynamics and for developing effective control measures.

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巴西东北部牛群中施马伦贝格病毒的监测。

本研究的目的是在阿拉戈斯州饲养的牛中进行施马伦贝格病毒（SBV）感染的血清学调查。对来自阿拉戈斯州农业国防局血清库的460份血清样本进行分析。这些样本是从阿拉戈斯州99个城市的100处未接种疫苗的牛身上收集的，这些城市代表了三个中部地区：阿格里斯特、莱斯特和塞特奥。采用商业间接酶联免疫吸附测定（ELISA）试剂盒进行血清学诊断。结果显示，460份样品中有4份（0.87%）的间接ELISA结果存在问题（计算百分比> 50.00%和≤60.00%）。经竞争性ELISA进一步检测，只有一份样品检测呈阳性。这些发现强调需要加强对新发病原体的区域监测和控制战略。此外，进一步的研究，包括从反刍动物和媒介中分离病毒，对于确认这种病原体的传播至关重要。这种全面的调查对于提高我们对SBV动态的理解和制定有效的控制措施是必不可少的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Tropical animal health and production 农林科学-兽医学

CiteScore

3.40

自引率

11.80%

发文量

361

审稿时长

6-12 weeks

期刊介绍： Tropical Animal Health and Production is an international journal publishing the results of original research in any field of animal health, welfare, and production with the aim of improving health and productivity of livestock, and better utilisation of animal resources, including wildlife in tropical, subtropical and similar agro-ecological environments.