Swine Enteric Coronaviruses

It has been said that “the only thing constant in life is change”. As an agricultural industry, farmers are very well aware of this; it’s just how significant that change affects your bottom line. Many of these changes, such as weather, market prices, and disease introductions are out of our hands.

I hope that your spring planting season has found everyone well. So, you might ask what happened to Swine Enteric Coronaviruses this past winter compared to winter 2013.

Fortunately, PEDv infections were down from last winter.

Graph courtesy of AASV.org website
Graph courtesy of AASV.org website

A combination of factors may be attributed to this decrease in cases. The increase in biosecurity efforts, such as a greater focus on livestock trailer washing, disinfection and drying, the introduction of conditionally licensed PEDv vaccines, and weather conditions to name a few. However, this does not diminish the fact that it is still a major threat to the swine herds.

Since the original PEDv case in April 2013, a variant strain was identified. This variant strain has been described globally, and may correlate with a less severe clinical presentation of PEDv. This variant strain was first detected in June 2013. In February 2014, the University of Minnesota sequenced the entire virual genetic material instead of one gene to determine the variability. Currently, three naturally occurring US PEDv strains have been identified. This does not include the Swine Delta Coronavirus, which was reported in late 2013, early 2014.