Riccio María Belén, García Jorge Pablo, Chiapparrone María Laura, Cantón Juliana, Cacciato Claudio, Origlia Javier Anibal, Cadario María Estela, Diab Santiago Sain, Uzal Francisco Alejandro
Servicio de Diagnóstico Veterinario FCV Tandil, Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil B7000GHG, Argentina.
Laboratorio de Microbiología Clínica y Experimental, Centro de Investigación Veterinaria de Tandil (CIVETAN) (UNCPBA-CICPBA-CONICET), Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil B7000GHG, Argentina.
Animals (Basel). 2024 Jul 2;14(13):1959. doi: 10.3390/ani14131959.
Chlamydiosis, caused by is a bacterial infection found in at least 465 species of birds worldwide. It is highly contagious among birds and can spread to humans. In birds, the disease can manifest itself in acute, subacute, and chronic forms with signs including anorexia, diarrhea, lethargy, weight loss, or, occasionally, mucopurulent or serous oculonasal discharge. This article describes an outbreak of chlamydiosis that occurred in a commercial psittacine breeding aviary in 2021 in Buenos Aires province, Argentina. In total, 16 juvenile blue-fronted parrots, more than 60 blue-fronted parrot chicks, and 2 adult macaws died during the outbreak. In all cases, clinical signs were weight loss, diarrhea, yellowish green excrement, and respiratory distress. The necropsy of four juvenile blue-fronted parrots, two blue-fronted parrot chicks, and two adult macaws revealed cachexia, hepatomegaly, splenomegaly, splenic petechial hemorrhages, ascites, pulmonary edema, and hydropericardium. Histologically, multifocal lymphoplasmacytic and heterophilic airsaculitis, multifocal lymphoplasmacytic and necrotizing hepatitis with intracytoplasmic elementary bodies, multifocal necro-heterophilic hepatitis, multifocal lymphoplasmacytic nephritis, and diffuse heterophilic pneumonia were found. A presumptive diagnosis was established based on gross and microscopic lesions, and it was confirmed using immunohistochemistry and polymerase chain reactions. The sequencing and phylogenetic analysis of the gene revealed genotype A and B of .
鹦鹉热衣原体病由鹦鹉热衣原体引起，是一种在全球至少465种鸟类中发现的细菌感染。它在鸟类中具有高度传染性，并且可以传播给人类。在鸟类中，该病可表现为急性、亚急性和慢性形式，症状包括厌食、腹泻、嗜睡、体重减轻，或偶尔出现黏液脓性或浆液性眼鼻分泌物。本文描述了2021年在阿根廷布宜诺斯艾利斯省一个商业鹦鹉繁殖鸟舍发生的鹦鹉热衣原体病疫情。在疫情期间，共有16只幼年蓝额鹦鹉、60多只蓝额鹦鹉雏鸟和2只成年金刚鹦鹉死亡。在所有病例中，临床症状均为体重减轻、腹泻、黄绿色粪便和呼吸窘迫。对4只幼年蓝额鹦鹉、2只蓝额鹦鹉雏鸟和2只成年金刚鹦鹉进行尸检，发现恶病质、肝肿大、脾肿大、脾点状出血、腹水、肺水肿和心包积水。组织学检查发现多灶性淋巴细胞浆细胞性和嗜异性气囊炎、多灶性淋巴细胞浆细胞性和坏死性肝炎伴胞浆内原体、多灶性坏死性嗜异性肝炎、多灶性淋巴细胞浆细胞性肾炎和弥漫性嗜异性肺炎。根据大体和显微镜下病变做出初步诊断，并通过免疫组织化学和聚合酶链反应进行确诊。对该基因的测序和系统发育分析显示为鹦鹉热衣原体的A和B基因型。
