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To enhance the knowledge of PRRSV and M hyo aerobiology and biosecurity, we conducted a 3-year study using a model of a swine-dense production region. During the study, we quantified pathogen load in bioaerosols, documented airborne spread of both agents out to 120 m, identified climactic conditions associated with the presence of pathogens in bioaerosols and demonstrated the ability to protect at-risk populations using various systems of air filtration, including MERV 16, MERV 14 and antimicrobial filters.
Over the course of the 3-year study, no evidence of PRRSV or M hyo transport and transmission occurred, independent of filter type.
In contrast, transport and transmission of both agents was frequently observed in the non-filtered control facility. In conclusion, this unique model provided new information regarding the aerobiology of two economically significant respiratory pathogens of pigs and described for the first time an effective means of disease control to protect at-risk populations. A summary of data from the 3-year project will be presented at the meeting.
S. Dee, S. Otake, J. Deen. Use of a production region model to evaluate aerosol transmission and biosecurity of PRRSV and Mycoplasma hyopneumoniae: Results from a 3-year study. 2010 AASV Annual Meeting: Implementing Knowledge.
