Abstract: Temporal and Spatial Evolution of the African Swine Fever Epidemic in Vietnam

Sep 02, 2022

African swine fever (ASF) is a severe infectious disease affecting domestic and wild suids. Spatiotemporal dynamics analysis of the ASF is crucial to understanding its transmission. The ASF broke out in Vietnam in February 2019. The research on the spatiotemporal evolution characteristics of ASF in Vietnam is lacking. Spatiotemporal statistical methods, including direction analysis, spatial autocorrelation analysis, and spatiotemporal scan statistics were used to reveal the dynamics of the spatial diffusion direction and spatiotemporal aggregation characteristics of ASF in Vietnam. According to the cessation of the epidemic, it was divided into three phases: February to August 2019 (phase 1), April to December 2020 (phase 2), and January 2021 to March 2022 (phase 3). The ASF showed a significant spread trend from north to south in phase 1. The occurrence rate of the ASF aggregated spatially in phase 1 and became random in phases 2 and 3.

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Video: Sow Welfare and Group Housing Systems - Dr. Laya Alves

In this episode of The Swine it Podcast Show Canada, Dr. Laya Alves from the University of São Paulo, in Brazil, discusses how animal welfare regulations are evolving globally and their impact on pig production systems. She explains challenges in group housing, pain management, and euthanasia decisions, while highlighting the role of training and management in improving outcomes and economic sustainability. Listen now on all major platforms!

"Translating welfare requirements into daily farm routines without compromising economic sustainability remains one of the biggest challenges faced by producers globally today."

Meet the guest: Dr. Laya Alves / laya-kannan is a Postdoctoral Researcher at the University of São Paulo, Brazil, focusing on animal welfare in pig production, including pain management, euthanasia, and economic decision making. Her work integrates welfare science with practical farm management and sustainability. She collaborates globally to develop applied tools for producers.