Joseph Smit [Public domain] via Wikimedia Commons
Avian proventricular dilatation disease (PDD) was first reported more than 30 years ago, but its cause has remained unknown until recently. An international group of scientists led by Amy L. Kistler (University of California, San Francisco) and Ady Gancz (The Exotic Clinic, Israel) has identified a new bornavirus (avian bornavirus, ABV) in affected parrots that may underlie the disease.
Lab Anim. (NY) 37, 393 (2008).
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