30 Pork News & Views Better Pork April 2021 Pork News & Views Ontario Ministry of Agriculture, Food and Rural Affairs Better Pork | August 2024 Ontario Animal Health Network (OAHN) Swine Network – Quarterly Producer/Industry Report The following are excerpts from the OAHN Jan-Mar 2024 Quarterly Report. For full details, visit https:// www.oahn.ca/reports/swine-industry-report-q1-2024/ Novel Influenza A- H3N2 Cluster 2010.1 Update It is speculated that the implementation of an updated regional influenza autogenous vaccine at the start of the quarter, which now includes the extremely dominant H3N2 cluster 2010.1 strain, may have reduced the overall prevalence of IAV cases during Q1 2024. Porcine Epidemic Diarrhea (PEDV)/ Porcine Deltacoronavirus (PDCoV) Update 19 new PDCoV cases were reported, as well as 7 new PED cases. The majority of these cases were found to be a result of contamination due to transport and/or people movements. Producers and veterinarians are encouraged to continue to be diligent in testing for these coronaviruses in all gastrointestinal cases. Producers are also encouraged to use SHARC (Swine Health Area Regional Control) information to stay aware of current positive sites in the proximity and to make educated decisions based off of this knowledge. Any producer interested in enrollment should contact Jessica Fox through Swine Health Ontario. https://swinehealtharc.ca/ Jessica Fox 519-767-4600 ext. 1401 info@swinehealthontario.ca 655 Southgate Drive, Guelph, ON N1G 5G6 Influenza A Virus (IAV) and Highly Pathogenic Avian Influenza (HPAI) Updates On March 25, 2024, the USDA confirmed a detection of HPAI in samples collected from dairy cattle. Since this, several states have now found similar detections. There have been no detections in cattle or other livestock species in Ontario or Canada as of June 3, 2024. Because pigs are known hosts for different influenza viruses and are known to act as a host for influenza virus reassortments, all efforts need to be made to prevent HPAI infection in pigs. Consider viewing the US Swine Health Information Center’s SHIC Talk, “The potential for H5N1 influenza in swine: Lessons learned from the dairy industry so far”, at https:// www.youtube.com/watch?v=gD01ID0zRus (Watch time: 1h 53m 34s) for more information. International Disease Topics of Interest – Dr. Al Scorgie Actinobacillus pleuropneumoniae (APP): Swine veterinarians in Quebec have reported a regional outbreak of APP in multiple finishing herds, specifically serotype 8. These herds are reporting that cases present with sudden mortalities, with 10-15% mortality observed in affected barns at the onset of the outbreak. Due to the rapid regional spread of these cases, vets are suspicious that this serotype is Figure 1: Submissions positive for influenza (not including ELISA tests) in swine by subtype and submission month, Ontario, January 2022 to March 2024. The number of IAV positive submissions seems to have stabilized in 2024 Q1. Most positive submissions in Q1 2024 (January-February) involve subtype H3N2. Figure 1 also shows counts of partial, mixed and inconclusive subtypes isolated from Ontario swine herds. (see legend above graph). Acknowledgement: Graph courtesy of Dr. Hannah Golightly- OMAFRA
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