Magalhães Fernando Jorge Rodrigues, da Silva José Givanildo, Ribeiro-Andrade Müller, Pinheiro José Wilton, Aparecido Mota Rinaldo
Veterinary, Health Surveillance Unit of the District of Fernando de Noronha, PE, Brazil.
Laboratório de Doenças Infecto-Contagiosas dos Animais Domésticos, Departamento de Medicina Veterinária, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil.
Acta Trop. 2016 Jul;159:58-61. doi: 10.1016/j.actatropica.2016.03.034. Epub 2016 Mar 28.
The present study aimed to determine the prevalence of toxoplasmosis in free-range chickens of the Fernando de Noronha Archipelago, Brazil and to identify risk factors associated with Toxoplasma gondii infection. Blood samples were collected from all the adult chickens raised in the Archipelago and screened by Indirect Fluorescent Antibody Test (430 samples, in total). Univariate analysis (Chi-square) and logistic regression were used to investigate the relationship between various variables possibly predictive of an increased likelihood of T. gondii infection. The overall prevalence of T. gondii infection in chickens of the Fernando de Noronha Archipelago was 88.4% (380/430; 84.6%-91.0%; 95% CI), ranging from 57.1% to 100.0% among the studied properties. The risk factors associated with T. gondii infection were the number of domestic cats in the properties (p=0.022), the presence of feral cats (p=0.006) and the presence of an open water source (p=0.046). Domestic and feral cats should be prevented from accessing the water and food supplied to chickens.
本研究旨在确定巴西费尔南多-迪诺罗尼亚群岛散养鸡的弓形虫病患病率，并确定与刚地弓形虫感染相关的风险因素。从该群岛饲养的所有成年鸡中采集血样，并通过间接荧光抗体试验进行筛查（共430份样本）。采用单因素分析（卡方检验）和逻辑回归分析来研究各种可能预测刚地弓形虫感染可能性增加的变量之间的关系。费尔南多-迪诺罗尼亚群岛鸡群中刚地弓形虫感染的总体患病率为88.4%（380/430；84.6%-91.0%；95%置信区间），在所研究的养殖场中患病率从57.1%到100.0%不等。与刚地弓形虫感染相关的风险因素包括养殖场中家猫的数量（p=0.022）、野猫的存在（p=0.006）以及开放水源的存在（p=0.046）。应防止家猫和野猫接触供应给鸡的水和食物。
