Contact Information and Resources
Johne's Contact Information:
PDF Contact Infosheet
Dr. David Griswold (Designated Johne's Coordinator)
(717) 783-8300
dgriswold@state.pa.us
Dr. Ernest Hovingh (Designated Johne's Coordinator)
(814) 863-8526
eph1@psu.edu
Gwen Bryant (Johne's Certification Administrator)
(717) 783-5301
gwbryant@state.pa.us
Dr. Deepanker Tewari (PDA Microbiology Laboratory)
(717) 787-8808
dtewari@state.pa.us
Dr. Robert Whitlock (Johne's Research Laboratory)
(610) 925-6321
rhw@upenn.edu
Other Useful Resources:
Johne's Information Center (Dr. Mike Collins, University of Wisconsin)
Information regarding Johne's Disease in small ruminants (Goats / Sheep)
National Johne's Education Initiative
National Johne's Working Group - Reference Materials
- Dairy - Handbook for Veterinarians and Dairy Producers [PDF]
- Beef - Handbook for Veterinarians and Beef Producers [PDF]
Risk Assesment and Herd Management Plan - Dairy Cattle (Pennsylvania Version)
