Molecular and serological survey of bovine viral diarrhea virus infection in cattle in Kazakhstan

血清流行率 牧群 血清学 病毒 人口 病毒学 兽医学 生物 逻辑回归 抗体 医学 免疫学 环境卫生 内科学
作者
Andrey V. Zhigailov,Yuliya V. Perfilyeva,Yekaterina O. Ostapchuk,S. Kan,A. Lushova,Artyom V. Kuligin,Karina R. Ivanova,Saltanat A. Kuatbekova,Nurshat Abdolla,Dinara A. Naizabayeva,Elina R. Maltseva,Zhanna A. Berdygulova,Akzhigit Mashzhan,Yuliya A. Zima,Anna S. Nizkorodova,Yuriy Skiba,Seidigapbar M. Mamadaliyev
出处
期刊:Research in Veterinary Science [Elsevier BV]
卷期号:162: 104965-104965 被引量:3
标识
DOI:10.1016/j.rvsc.2023.104965
摘要

The aim of this study was to estimate the occurrence of bovine viral diarrhea virus (BVDV) infection and to assess the population immunity in cattle vaccinated against BVDV in different regions of Kazakhstan. Cattle samples were collected in 12 oblasts (43 districts) of Kazakhstan. A total of 2477 cattle from 114 herds and 21 Bukhara deer (Cervus elaphus bactrianus) were examined by ELISA and conventional RT-PCR. Univariate and multivariate logistic regression analysis was performed to identify risk factors associated with BVDV infection in the country. In total, antibodies against BVDV were found in 79.3% (1965/2477) of all the animals and 92.1% (105/114) of all the herds examined. Seroprevalence in unvaccinated and vaccinated animals was 48.6% (447/920) and 98.7% (1391/1410), respectively. Seroprevalence in deer was 19.1% (4/21). The BVDV RNA was detected in six unvaccinated cattle (0.2%). Sequence analysis of the 5'-untranslated region demonstrated that four of the detected strains belonged to BVDV-1 and two strains to BVDV-2. Regression analysis revealed that age, production type, housing method, farm size, and geographic location were risk factors for BVDV infection in cattle in Kazakhstan. The present data confirm circulation of BVDV-1 and BVDV-2 in Kazakhstan and highlight the need to improve strategies for prevention and control of BVDV infection in the country.
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