Agriculture & Animal Husbandry Industry

• Rapid and widespread transmission: The Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) can be transmitted via aerosols over distances of 0.5 to 150 meters under experimental conditions, and up to 9.2 kilometers or even farther in field conditions. This highly efficient mode of transmission enables the virus to spread rapidly among livestock, resulting in widespread infection. • Impact on livestock health: It affects production performance. For instance, the Classical Swine Fever Virus (CSFV) can cause high fever, anorexia, respiratory distress, and other symptoms in infected pigs, potentially leading to death in severe cases, posing a significant threat to pig production and health. • Significant economic losses: Due to the high infectivity and pathogenicity of airborne viruses, outbreaks in farms often result in the death or culling of a large number of livestock. This not only incurs direct economic losses but also damages the farm's reputation and market competitiveness. • Difficulties in prevention and control: Airborne viruses are often challenging to effectively control using traditional epidemic prevention measures. For instance, viruses can remain suspended in the air via aerosols for extended periods and spread with the wind, rendering traditional isolation and disinfection measures ineffective. • Public health risks: Some airborne viruses in farms may also pose public health risks to humans. For example, the Foot-and-Mouth Disease Virus (FMDV) not only affects the health of pigs, cattle, sheep, and other animals but can also be transmitted to humans through contact with or consumption of infected animal products. Although this scenario is relatively rare, it still warrants serious attention.