Just got alerted by Paula Olsiewski & Eileen Choffnes to this paper Role of Transportation in Spread of Porcine Epidemic Diarrhea Virus Infection, United States by James Lowe, Phillip Gauger, Karen Harmon, Jianqiang Zhang, Joseph Connor, Paul Yeske, Timothy Loula, Ian Levis, Luc Dufresne, and Rodger Main.  The paper is in the CDC journal “Emerging Infectious Diseases” and …