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: The Next Pork Disease Outbreak? How Biosecurity Can Stop It Before It Starts!

The threat of disease outbreaks remains one of the biggest challenges facing pork producers across North America. At the World Pork Expo, I spoke with Rob Hannam, CEO of Farm Health Guardian, to discuss why biosecurity is more critical than ever and how innovative technology is helping producers reduce risk before disease reaches the farm.
In this interview, Rob explains how Farm Health Guardian's advanced biosecurity platform helps pork operations monitor and manage visitor access, track potential disease exposure pathways, and strengthen on-farm biosecurity protocols. With recent outbreaks of diseases such as ASF, PRRS, PED and others continuing to impact global pork production and ongoing concerns surrounding the spread of endemic diseases, proactive prevention measures have become essential for protecting herd health and business continuity.
Learn how digital biosecurity tools can help producers identify risks, improve compliance, and create stronger defenses against costly disease outbreaks. Discover why leading pork operations are adopting technology-driven biosecurity solutions to safeguard animals, employees, and the future of the industry.