Abdallah Mohamed-Cherif, Kamel Miroud, Karima Benfodil, Samir Ansel, Djamel Khelef, Rachid Kaidi, Khatima Ait-Oudhia
Laboratoire Hygiène Alimentaire et Système Assurance Qualité (Hasaq), Ecole Nationale Supérieure Vétérinaire d'Alger. Rue Issad. Oued Smar., Bab Ezzouar, Algeria.
Laboratoire Epidémio-surveillance, santé, productions et reproduction, expérimentation et thérapie cellulaire des animaux domestiques et sauvages (ESSPRETCADS), Institut des Sciences Vétérinaires, Université Chadli Bendjedid El-Tarf, ElTarf 36000, Algeria.
Vet Sci. 2019 Jul 10;6(3):63. doi: 10.3390/vetsci6030063.
A cross-sectional study aimed at assessing the seroprevalence and identifying the risk factors for infection in cattle, sheep, and goats in eight provinces located in two main Algerian agro-ecological zones was carried out from October 2015 to March 2018. Blood sera from 4074 animals of both sexes were tested for the presence of anti- IgG antibodies, using the indirect, enzyme-linked, immunosorbent assay technique (ELISA). Moreover, to identify the potential risk factors of infection, a survey through a breeders' questionnaires was conducted. Nearly one-fourth of the total number of animals tested (1024/4074)-i.e., 25.1%--were seropositive. The seroprevalence in cattle, sheep, and goats was 28.7%, 25.6%, and 11.9%, respectively. The area, sex, age, and herd size were identified as risk factors for infection. Higher seropositivity rates were recorded in cows and goats (odds ratio (OR) = 1.63 and 6.4), in old animals (cattle, OR = 2.1; sheep, OR = 1.9; and goat, OR = 3.9), and in small size herds (cattle, OR = 2.5; sheep, OR = 1.9; goat, OR = 2.2). In conclusion, there is widespread infection in cattle, sheep, and goats in these two strategic agricultural areas. The identification of the risk factors determines the type of measures and strategies to be undertaken to reduce, control, and prevent infection in domestic animals, and thereby reduce human infection.
2015年10月至2018年3月，在阿尔及利亚两个主要农业生态区的八个省份开展了一项横断面研究，旨在评估牛、羊和山羊的血清阳性率并确定感染风险因素。使用间接酶联免疫吸附测定技术（ELISA）对4074只不同性别的动物的血清进行了抗IgG抗体检测。此外，为了确定潜在的感染风险因素，通过养殖者问卷进行了一项调查。检测的动物总数中近四分之一（1024/4074），即25.1%呈血清阳性。牛、羊和山羊的血清阳性率分别为28.7%、25.6%和11.9%。地区、性别、年龄和畜群规模被确定为感染的风险因素。奶牛和山羊的血清阳性率较高（优势比（OR）分别为1.63和6.4），老龄动物（牛，OR = 2.1；羊，OR = 1.9；山羊，OR = 3.9）以及小规模畜群（牛，OR = 2.5；羊，OR = 1.9；山羊，OR = 2.2）的血清阳性率也较高。总之，在这两个重要农业地区的牛、羊和山羊中感染普遍存在。确定风险因素有助于确定为减少、控制和预防家畜感染从而减少人类感染而应采取的措施和策略类型。
