X particles 3.5 reddit7/7/2023 Aerosols from experimentally infected pigs were sampled for 24 days using an Andersen cascade impactor able to separate particles by size (ranging from 0.4 to 10 micrometer (μm) in diameter). In this study we characterized the concentration and size distribution of inhalable particles that transport influenza A virus (IAV), porcine reproductive and respiratory syndrome virus (PRRSV), and porcine epidemic diarrhea virus (PEDV) generated by acutely infected pigs and assessed virus viability for each particle size range. Despite the importance of this information, the size distribution of particles bearing viruses emitted by infectious animals remains unknown. Particle size determines the distance across which pathogens can be transported, as well as the site of deposition and the survivability of the pathogen. When pathogens become airborne, they travel associated with particles of different size and composition.
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