Stability of Porcine Epidemic Diarrhea Virus on Fomite Materials at Different Temperatures
Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, 225 VMC, 1365 Gortner Ave, St. Paul, MN 55108, USA
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Vet. Sci. 2018, 5(1), 21; https://doi.org/10.3390/vetsci5010021
Received: 10 January 2018
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Revised: 9 February 2018
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Accepted: 11 February 2018
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Published: 13 February 2018
Indirect transmission of porcine epidemic diarrhea virus (PEDV) ensues when susceptible animals contact PEDV-contaminated fomite materials. Although the survival of PEDV under various pHs and temperatures has been studied, virus stability on different fomite surfaces under varying temperature conditions has not been explored. Hence, we evaluated the survival of PEDV on inanimate objects routinely used on swine farms such as styrofoam, rubber, plastic, coveralls, and other equipment. The titer of infectious PEDV at 4 °C decreased by only 1 to 2 log during the first 5 days, and the virus was recoverable for up to 15 days on Styrofoam, aluminum, Tyvek® coverall, cloth, and plastic. However, viral titers decreased precipitously when stored at room temperature; no virus was detectable after one day on all materials tested. A more sensitive immunoplaque assay was able to detect virus from Styrofoam, metal, and plastic at 20 days post application, representing a 3-log loss of input virus on fomite materials. Recovery of infectious PEDV from Tyvek® coverall and rubber was above detection limit at 20 days. Our findings indicate that the type of fomite material and temperatures impact PEDV stability, which is important in understanding the nuances of indirect transmission and epidemiology of PEDV.
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Keywords:
porcine epidemic diarrhea virus; fomite; stability; material; temperature; survival; swine; rubber; plastic; Styrofoam
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MDPI and ACS Style
Kim, Y.; Krishna, V.D.; Torremorell, M.; Goyal, S.M.; Cheeran, M.C.-J. Stability of Porcine Epidemic Diarrhea Virus on Fomite Materials at Different Temperatures. Vet. Sci. 2018, 5, 21. https://doi.org/10.3390/vetsci5010021
AMA Style
Kim Y, Krishna VD, Torremorell M, Goyal SM, Cheeran MC-J. Stability of Porcine Epidemic Diarrhea Virus on Fomite Materials at Different Temperatures. Veterinary Sciences. 2018; 5(1):21. https://doi.org/10.3390/vetsci5010021
Chicago/Turabian StyleKim, Yonghyan, Venkatramana D. Krishna, Montserrat Torremorell, Sagar M. Goyal, and Maxim C.-J. Cheeran. 2018. "Stability of Porcine Epidemic Diarrhea Virus on Fomite Materials at Different Temperatures" Veterinary Sciences 5, no. 1: 21. https://doi.org/10.3390/vetsci5010021
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