禽偏肺病毒感染，火鸡
Turkey flock after natural infection with avian metapneumovirus. Some birds in the photo have swollen infraorbital sinuses and dirty backs or wing feathers, indicating nasal discharge. Note that not all birds are clinically affected.
Courtesy of Dr. Mirja Koy, Clinic for Poultry, University of Veterinary Medicine Hannover.
在这些主题中
