Şener Rumeysa, Türk Tarık
Department of Geomatics Engineering, Faculty of Engineering, Sivas Cumhuriyet University, 58140, Sivas, Türkiye.
Trop Anim Health Prod. 2023 Feb 4;55(2):65. doi: 10.1007/s11250-023-03487-6.
Sheep and goat pox (SGP) is a highly infectious disease with a high case fatality rate. It causes serious economic losses and decreases productivity in infected facilities and contact areas. As in many countries of the world, SGP outbreaks reported from Turkey to the World Organization for Animal Health (OIE) continue to threaten animal health. Therefore, studies that will guide the production of effective policies to prevent and control SGP are extremely important. This study aims at evaluating the spatiotemporal distribution of SGP outbreaks by geographical information system (GIS)-based analyses. In accordance with this purpose, spatiotemporal scan analyses were applied to reveal the spatiotemporal distribution pattern and transmission of SGP outbreaks reported in Turkey between 2010 and 2019. Space-time cluster analysis revealed 4 several clusters, indicating geographic areas at the highest risk. Spatiotemporal clusters were 6 to 11 times more likely to be exposed to SGP than the general distribution. The average spatiotemporal density of outbreaks in clusters was estimated as 0.20 ± 0.07 outbreaks per 1000 km per month. Seasonal analysis and time series analysis showed similar findings. The seasonality of SGP was mainly defined in the winter (from December to February) when the seasonal adjusted factor (SAF) was at a peak of 504.6. In addition, February had the highest SAF with 7.1. Directional distribution analysis showed that the transmission of SGP was oriented between northeast (NE)-southwest (SW) and northwest (NW)-southeast (SE) and that distribution was changed every 2 years. These findings present a basis for the effective monitoring and prevention of SGP and provide valuable information to policymakers.
绵羊和山羊痘(SGP)是一种具有高病死率的高度传染性疾病。它会造成严重的经济损失,并降低受感染养殖场及接触地区的生产力。与世界上许多国家一样,土耳其向世界动物卫生组织(OIE)报告的绵羊和山羊痘疫情持续威胁着动物健康。因此,开展有助于制定有效防控SGP政策的研究极为重要。本研究旨在通过基于地理信息系统(GIS)的分析评估SGP疫情的时空分布。据此,应用时空扫描分析来揭示2010年至2019年土耳其报告的SGP疫情的时空分布模式及传播情况。时空聚类分析发现了4个聚类,表明这些地理区域风险最高。时空聚类感染SGP的可能性是总体分布的6至11倍。聚类中疫情的平均时空密度估计为每月每1000平方公里0.20±0.07起疫情。季节性分析和时间序列分析得出了类似结果。SGP的季节性主要出现在冬季(12月至2月),此时季节性调整因子(SAF)达到峰值504.6。此外,2月的SAF最高,为7.1。方向分布分析表明,SGP的传播方向为东北(NE)-西南(SW)和西北(NW)-东南(SE),且分布每两年变化一次。这些发现为有效监测和预防SGP奠定了基础,并为政策制定者提供了有价值的信息。