PEDV and PDCoV Detection Remains Higher than Expected

Aug 03, 2026

The Swine Health Information Center reports reductions in the detection of PRRS are noted, while PED and Delta Coronavirus detections remain higher than expected. As part of its July eNewsletter the Swine Health Information Center has released its monthly domestic and global swine disease monitoring reports.
SHIC Associate Director Dr. Lisa Becton says this month’s domestic report highlights several key findings related to Porcine Reproductive and Respiratory Syndrome, Porcine Epidemic Diarrhea and Porcine Delta Coronavirus.

Quote-Dr. Lisa Becton-Swine Health Information Center:

PRRS case detection is decreased but, overall, the case positivity is still relatively high, especially in grow-finish populations.For PED and Porcine Delta Coronavirus, it's also decreased for the month of July but PED activity was increased in June greater than expected levels.Both viruses have been very active and, in some instances, detected at a rate that is definitely greater than expected.

PRRS continues to be an issue and tracking of isolates is very important to be able to track and monitor those changes, because also we're seeing that these viruses are not necessarily following seasonal or expected historical trends.What this means is really focus on any of the biosecurity steps that can reduce viral load and potential transmission, so things like transportation and barn sanitation, preventing entry, downtime and even looking at vaccination strategies or exposure strategies that benefit herd health.And work with your veterinarian to make them most effective.

Dr. Becton notes regarding PRRS genotype trends, variant 1C.2 has split and the subsequent variant 1C.2.45 became the most detected in North Carolina while variant 1A.13.49 moved into the top three most frequently detected variants.She says PRRS is rapidly changing so it's important to monitor trends that can impact the health strategies for disease management, virus exposure and biosecurity.SHIC’s domestic and global swine disease monitoring reports can be accessed at swinehealth.org

Source : Farmscape.ca

Video: PRRS Eradication Strategies - Dr. DeBuse and Dr. Tousignant

In this episode of The Swine it Podcast Show, Dr. Neil DeBuse from Kalmbach Feeds and Dr. Steve Tousignant from Vaxxinova US discuss PRRS management strategies, recombination risks, whole genome sequencing, and the role of autogenous immunization programs in swine systems. They highlight practical approaches to improving immunity, reducing outbreaks, and advancing PRRS control across production systems. Listen now on all major platforms!

"Being PRRS negative sooner is a real key for eradication because every additional positive week increases production losses and viral exposure risks." - Dr. Neil DeBuse

Meet the guest: Dr. Neil DeBuse is a veterinarian at Kalmbach Feeds with more than 30 years of experience in swine health and production. His work focuses on PRRS control, biosecurity, immunity, and improving production stability across commercial swine systems in the United States and internationally.

Dr. Steve Tousignant is Director of the Swine Business Unit and Technical Services Veterinarian at Vaxxinova US, with a DVM and PhD from the University of Minnesota. His experience combines epidemiology, technical services, and practical immunization strategies designed to support consistent herd performance and long-term production stability. Don’t miss the chance to be part of the Swine Inner Circle!