Drs. Perez, Alba, Goede, and Morrison published a new scientific paper in the journal Frontiers in Veterinary Science concerning the spread of the enteric coronaviruses in the United states.
Abstract: The reporting and monitoring of swine enteric coronavirus diseases (SECD), including porcine epidemic diarrhea virus and porcine delta coronavirus, in the United States have been challenging because of the initial absence of a regulatory framework and the emerging nature of these diseases. The National Animal Health Laboratory Network, the Emergency Management and Response System, and the Swine Health Monitoring Project were used to monitor the disease situation between May 2013 and March 2015. Important differences existed between and among them in terms of nature and extent of reporting. Here, we assess the implementation of these systems from different perspectives, including a description and comparison of collected data, disease metrics, usefulness, simplicity, flexibility, acceptability, representativeness, timeliness, and stability. This assessment demonstrates the limitations that the absence of premises identification imposes on certain animal health surveillance and response databases, and the importance of federally regulated frameworks in collecting accurate information in a timely manner. This study also demonstrates the value that the voluntary and producer-organized systems may have in monitoring emerging diseases. The results from all three data sources help to establish the baseline information on SECD epidemiological dynamics after almost 3 years of disease occurrence in the country.
Dr. Torremorell, director of the Swine Disease Eradication Center published a new study on the persistence of Influenza A virus in air and on surfaces of swine production facilities.
Abstract: Indirect transmission of influenza A virus (IAV) in swine is poorly understood and information is lacking on levels of environmental exposure encountered by swine and people during outbreaks of IAV in swine barns. We characterized viral load, viability and persistence of IAV in air and on surfaces during outbreaks in swine barns. IAV was detected in pigs, air and surfaces from five confirmed outbreaks with 48% (47/98) of oral fluid, 38% (32/84) of pen railing and 43% (35/82) of indoor air samples testing positive by IAV RT-PCR. IAV was isolated from air and oral fluids yielding a mixture of subtypes (H1N1, H1N2 and H3N2). Detection of IAV RNA from air was sustained during the outbreaks with maximum levels estimated between 7 and 11 days from reported onset. Our results indicate that during outbreaks of IAV in swine, aerosols and surfaces in barns contain significant levels of IAV potentially representing an exposure hazard to both swine and people.
UMN students did a fantastic job at the 2016 American Association of Swine Veterinarians (AASV) meeting. Four students presented their projects as a poster presentation and two gave a presentation, reaching 2nd and 3rd position of the student competition. Alyssa Anderson was one of the five students awarded with the Merck-AASV Foundation scholarship.
On the faculty side, Dr. Mike Murtaugh’s research project concerning the development of a challenge-free model to predict vaccine efficacy, was one of the four recognized by and received support from the AASV Foundation.