PRRSv is an ever-evolving virus affecting the global swine industry. There have been several exciting new developments to help veterinarians and producers implementing strategies to manage PRRSv infection.
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This document provides a summary of monitoring and surveillance systems (MOSS) available using ongoing monitoring of production & clinical data, as well as using diagnos- tics. There are new tools and strategies in both fronts, which are presented here. The information from these MOSS tools allows early detection of outbreaks and classifying herds according to PRRSv activity. These measurements allow for a more accurate evaluation of progress towards virus control and elimination.
The first part of the document dives into the new MOSS tools at the pig level (i.e., using serum or oral swabs) or the population level (i.e., using processing fluids, tongue tips fluids, oral fluids). We present the tools, their application, and a guide on how to interpret results related to PRRSv activity, and how to associate that with PRRSv management strategies (control or elimination).
The second part provides a guide on how to use the MOSS results to classify herds according to PRRSv exposure and active circulation. This facilitates communication within and between production systems and veterinary clinics, allows veterinarians and producers to measure the effectiveness of different interventions to prevent, detect, or manage PRRSv infection; and also allows academic institutions to conduct standardized epidemiological studies and economic assessment at the system, region, or national levels on PRRSv impact on productivity.
The third chapter provides insights on key factors to manage PRRSv infection in affected herds, sharing results from field-based studies on factors associated to shorten the time to produce negative piglets and to minimize the production losses incurred from PRRSv infection.
Altogether, the document provides field-based data on aspects and strategies associated with response & recovery of PRRSv infection, helping veterinarians and producers keep improving efforts to improve animal health & productivity.