2015年2月,两只欧亚领形鸽子(Streptopeliadecaocto)被送往加利福尼亚动物健康与食品安全(CAHFS)实验室死亡。Turlock分支,从一个突然经历的私人鸟舍,成年鸽子的高死亡率(4/9)。在两只鸽子中,大体和组织学病变指示急性,致命的败血症.严重的,有许多淡黄色的病灶,直径1至2毫米,在肝脏和脾脏。微观上,这些病灶由肝细胞和脾髓的急性严重多灶性凝固性坏死组成,并伴有与纤维蛋白混合的嗜异粒细胞浸润和革兰氏阴性菌的密集菌落。从肺中分离出假结核耶尔森氏菌,肝脏,脾,脾心,子房,肾,还有气管.这种生物对大多数抗生素敏感,除了红霉素.根据1990年至2015年间对CAHFS进行尸检的回顾性研究,共有77例鸟类假结核。从动物园和私人设施的各种圈养鸟类中发现了75/77例,从一个前提下提交的两只后院火鸡中发现了2/77例。最多的病例来自鹦鹉素物种(31/77)。最常见的病变是肝炎(63/77),脾炎(49/77),肺炎(30/77),肾炎(16/77),和肠炎(12/77)。从1990年到2015年,CAHFS每年平均有3例假肺结核病例。尽管1993年和1994年没有确诊病例,但在其他所有年份,从禽类诊断报告中发现了1至8例假结核.
In February 2015, two Eurasian collared doves (Streptopelia decaocto) were submitted dead to the California Animal Health and Food Safety (CAHFS) Laboratory, Turlock branch, from a private aviary experiencing sudden, high mortality (4/9) in adult doves. In both doves, the gross and histologic lesions were indicative of acute, fatal septicemia. Grossly, there were numerous pale yellow foci, 1 to 2 mm in diameter, in the liver and spleen. Microscopically, these foci were composed of acute severe multifocal coagulative necrosis of hepatocytes and splenic pulp with infiltration of heterophils mixed with fibrin and dense colonies of gram-negative bacteria. Yersinia pseudotuberculosis was isolated from the lung, liver, spleen, heart, ovary, kidney, and trachea. The organism was susceptible to most antibiotics it was tested against, except erythromycin. Based on a retrospective
study of necropsy submissions to CAHFS between 1990 and 2015, there were 77 avian case submissions of Y. pseudotuberculosis. There were 75/77 cases identified from a wide range of captive avian species from both zoo and private facilities and 2/77 cases from two backyard turkeys submitted from one premise. The largest number of cases originated from psittacine species (31/77). The lesions most commonly described were hepatitis (63/77), splenitis (49/77), pneumonia (30/77), nephritis (16/77), and enteritis (12/77). From 1990 to 2015, there was an average of three cases of avian pseudotuberculosis per year at CAHFS. Although there were no cases diagnosed in 1993 and 1994, in all other years, there were between one and eight cases of Y. pseudotuberculosis detected from avian diagnostic submissions.