A new swine virus has been discovered in the US, the Porcine Epidemic Diarrhea Virus (PEDV), and has spread to 13 states, with over 100 positive cases. The virus was initially discovered in May, and has proved difficult to control, even in the summer heat. The spread of typical strains of gastroenteritis usually slow during the warmer months, but this strain of PEDV has proved to be quite resilient.
The disease has a high mortality rate with piglets — 50% — though the mortality rate has reached 100% in some areas. US PEDV is 99.4% identical in genetic structure to the Chinese PEDV that ravaged farms across China in 2010, killing over 1 million piglets. PEDV has been observed in many farming states, including Arkansas, Kansas, Pennsylvania, Colorado, Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Ohio, Oklahoma and South Dakota.
This infectious outbreak could become even more deadly for the pork industry, which is still suffering from last year’s drought: the drought caused feed-grain prices to skyrocket, compelling farmers to slaughter more pigs than normal. Now there will be a scarcity for meat, with the possibility of pork prices soaring as well.
The USDA is still unsure of how PEDV entered the US — the current focus is the livestock transportation system. The USDA also thinks that the infection could have been spread by pigs eating diseased feces, or humans unknowingly transporting feces.
However, PEDV poses no threat to humans or other animals — it is safe for people to eat meat from pigs infected with PEDV.
Conceived, Developed and Written by Dr. Subodh Das and Tara Mahadevan
June 21, 2013
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