update on pedv
DESCRIPTION
Update on PEDV. Lisa Becton, DVM, MS National Pork Board. Porcine Epidemic Diarrhea Virus (PEDV). Overview of the disease Current US status Actions to manage PEDV American Association of Swine Veterinarians review Q/A. PEDV – Initial focus. - PowerPoint PPT PresentationTRANSCRIPT
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Update on PEDV
Lisa Becton, DVM, MSNational Pork Board
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Porcine Epidemic Diarrhea Virus (PEDV)
• Overview of the disease• Current US status• Actions to manage PEDV• American Association of Swine Veterinarians
review• Q/A
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PEDV – Initial focus• Coordinated effort by all key stakeholders to
understand where PEDV was/is occurring and how to best manage it:– United States Department of Agriculture (multiple
divisions)– National Pork Board– National Pork Producers Council– American Association of Swine Veterinarians
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PEDV – what is it?• PEDV is a diarrheal disease of pigs that has
recently been found in the United States and is similar to the TGE virus (Transmissible Gastroenteritis virus)
• PEDV was confirmed in the US on May 16th, 2013 by diagnostic tests at the USDA National Veterinary Services Laboratory (NVSL) in Ames, IA
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PEDV – What it is…• PEDV currently exists in many different parts of
the world
• Considered to be a production disease
• Can be managed/controlled/eliminated with targeted biosecurity efforts
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PEDV – What it is NOT…• Not zoonotic• Not a food safety concern• Not a listed disease of the OIE• Not on the National Animal Health Reporting
System (NAHRS) Reportable Disease List• Not considered a Foreign Animal Disease in the
United States• No interstate trade restrictions pertaining to
PEDV
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PEDV – What are the symptoms? • PEDV symptoms can vary from TGE but are
generally similar:– Symptoms on farm can range from mild to rapid and
explosive spread– Diarrhea and vomiting in pigs of all ages
• Most severe in baby pigs – Mortality ~ 100% for pigs < 7 days of age– Mortality ~ 90% in pigs 8-21 days of age
• Sows and older growing swine can show various degrees of illness, but generally more mild than baby pigs
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PEDV – How is it diagnosed?• Laboratory confirmation is the only way to
diagnose and differentiate PEDV from TGE – Many different labs working together to have needed
diagnostic tests available: Iowa State, University of Minnesota, Kansas State, South Dakota State, NVSL
• Current diarrheal cases have detected TGE, so it is very important to work with your veterinarian for an accurate diagnosis!
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PEDV – What is the current status?• Positive samples have been identified in multiple
states
• PEDV has been identified in both sow farms as well as growing pig sites
• Are there concerns about other potential sources of PEDV?
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PEDV – status of sampling• Confirmation of the disease has been from
samples taken from sick pigs
• After the initial diagnosis of PEDV, concerns arose that feed or ingredients might be a potential source of PEDV– USDA has worked closely with the Food and Drug
Administration (FDA) to sample feedstuffs– No positive samples have been identified to date– However, testing is ongoing
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PEDV – What’s next?
2013 Supplemental Funding PED research•Speed and effectiveness •Transparent and objective•Targeted projects with short timeframes•Flexibility with oversight of Swine Health Committee leadership
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Porcine Epidemic Diarrhea - PED
2013 Supplemental Funding request: $410,000•PEDV Needs
– Support current “entry” survey– Support next “epidemiology” survey– Carrier, immunity, transmission, challenge– Diagnostic tools and validation– Viral propagation and survival
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PEDV – What’s next?• Work with the Swine Health Committee, AASV,
NPPC and other key stakeholders to initiate the research process for PEDV
• Goal is to rapidly respond and provide needed information regarding PEDV for management of this virus
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PEDv Investigation 2013
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Survey Instrument
Primary infectionFirst site/herd – confirmed positive PEDvAny stage of productionRisk factors – common to all or many
confirmed positive casesCharacterize the clinical presentationAlso survey negative herd – case control for
comparison
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Information Gathering
Herd information# & type on siteNearby farmsBiosecurityEntries onto siteTrucks/trailersSecurity breaches
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Information Gathering - continued Inputs
SemenVaccinesFeedFeed supplements/base mix/premixProtein
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Characterize the clinical presentations on the farmClinical signsDate of onsetMorbidityMortalitySamples to veterinary diagnostic laboratoryRecovery
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Data Analysis
National Center for Foreign Animal & Zoonotic Disease Defense (FAZD)
US Department of Agriculture – Center for Epidemiology And Animal Health (CEAH)
National Pork BoardNational Pork Producers CouncilAmerican Association of Swine Veterinarians
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Next Steps
Lateral transmissionContainment & elimination?Hypotheses generationFurther research
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This message funded by America’s Pork Checkoff Program.
Questions?