■结块性皮肤病是一种病毒性疾病,会影响属于Capropoxvirus属(Poxviridae)的牛,并导致重大的经济损失。
■这项研究的目的是评估块状皮肤病(LSD)暴发的分布,并根据埃塞俄比亚的回顾性暴发报告预测未来的模式。
■数据是通过与区域实验室的直接沟通以及从农民协会到农业部的分层报告系统收集的。使用经典的加性时间序列分解和STL分解分析了LSD爆发的时间序列数据。四种型号(ARIMA,SARIMA,ETS,STLF)还用于预测进行模型准确性测试后的年份(2021-2025年)每月发生的LSD爆发次数。此外,时空排列模型(STP)也用于研究埃塞俄比亚LSD暴发的回顾性时空聚类分析.
■这项研究调查了2008年至2020年埃塞俄比亚LSD爆发的地理和时间分布,共报告了3,256次LSD爆发,14,754例LSD阳性病例,7758人死亡,还有289次屠杀.它还覆盖了埃塞俄比亚大约68%的地区,奥罗米亚报告的LSD爆发次数最高。在LSD的时间分布中,据报道,9月至12月的雨季之后是最高峰,而4月和5月的干旱月份是最高峰。在为预测而测试的四个模型中,SARIMA(3,0,0)(2,1,0)[12]模型对验证数据表现良好,而STLF随机游走对训练数据有很强的预测。因此,SARIMA和STLF随机游走模型对2020年至2025年之间的LSD爆发进行了更准确的预测。从LSD的回顾性时空聚类分析,还确定了八个可能的集群,其中五个位于埃塞俄比亚中部。
■该研究的时间序列和对LSD爆发数据的ST聚类分析为埃塞俄比亚疾病的时空动态提供了有价值的见解。这些见解可以帮助制定控制和预防疾病传播的有效策略,并具有改善该国抗击LSD的努力的巨大潜力。
UNASSIGNED: Lumpy skin disease is a viral disease that affects cattle belonging to genus Capripoxvirus (Poxviridae) and lead to significant economic losses.
UNASSIGNED: The objective of this study was to evaluate the distribution of lumpy skin disease (LSD) outbreaks and predict future patterns based on retrospective outbreak
reports in Ethiopia.
UNASSIGNED: Data were collected through direct communication with regional laboratories and a hierarchical reporting system from the Peasant Associations to Ministry of Agriculture. Time-series data for the LSD outbreaks were analyzed using classical additive time-series decomposition and STL decomposition. Four models (ARIMA, SARIMA, ETS, STLF) were also used to forecast the number of LSD outbreaks that occurred each month for the years (2021-2025) after the models\' accuracy test was performed. Additionally, the space-time permutation model (STP) were also used to study retrospective space-time cluster analysis of LSD outbreaks in Ethiopia.
UNASSIGNED: This study examined the geographical and temporal distribution of LSD outbreaks in Ethiopia from 2008 to 2020, reporting a total of 3,256 LSD outbreaks, 14,754 LSD-positive cases, 7,758 deaths, and 289 slaughters. It also covered approximately 68% of Ethiopia\'s districts, with Oromia reporting the highest LSD outbreaks. In the LSD\'s temporal distribution, the highest peak was reported following the rainy season in September to December and its lowest peak in the dry months of April and May. Out of the four models tested for forecasting, the SARIMA (3, 0, 0) (2, 1, 0) [12] model performed well for the validation data, while the STLF+Random Walk had a robust prediction for the training data. Thus, the SARIMA and STLF+Random Walk models produced a more accurate forecast of LSD outbreaks between 2020 and 2025. From retrospective Space-Time Cluster Analysis of LSD, eight possible clusters were also identified, with five of them located in central part of Ethiopia.
UNASSIGNED: The study\'s time series and ST-cluster analysis of LSD outbreak data provide valuable insights into the spatial and temporal dynamics of the disease in Ethiopia. These insights can aid in the development of effective strategies to control and prevent the spread of the disease and holds great potential for improving efforts to combat LSD in the country.