Dhillon A S, Thacker H L, Winterfield R W
Avian Dis. 1982 Apr-Jun;26(2):445-9.
Visceral toxoplasmosis was diagnosed in 23 mynahs (Acridotheres) imported from Mexico, which resulted in the death of all birds in the shipment. The affected birds were inappetent and depressed and had ruffled feathers before death. Gross alterations included mottled, enlarged livers with multiple diffuse subcapsular white foci, congested lungs, mottled spleens, and thickened air sacs. Microscopic alterations were multifocal granulomatous hepatitis, pneumonitis, diffuse splenitis, focal mononuclear myocarditis, and airsacculitis. Foamy macrophages in affected areas of the livers contained 8-10 protozoan organisms 1-3 nm in diameter. Similar organisms were present in affected spleens. The organisms were identified with special stains and electron microscopy as Toxoplasma gondii. Human infection was diagnosed in the caretaker by an attending physician. He was treated with pyrimethamine and apparently recovered.
从墨西哥进口的23只八哥（鹩哥属）被诊断出患有内脏型弓形虫病，导致这批鸟类全部死亡。患病鸟类食欲不振、精神萎靡，死前羽毛蓬松。肉眼可见的病变包括肝脏斑驳、肿大，有多个弥漫性的包膜下白色病灶，肺部充血，脾脏斑驳，气囊增厚。显微镜下的病变有多处肉芽肿性肝炎、肺炎、弥漫性脾炎、局灶性单核细胞性心肌炎和气囊炎。肝脏病变区域的泡沫状巨噬细胞内含有直径为1 - 3纳米的8 - 10个原生动物生物体。在患病的脾脏中也发现了类似的生物体。通过特殊染色和电子显微镜鉴定这些生物体为刚地弓形虫。一名主治医生诊断出照料者感染了弓形虫。他接受了乙胺嘧啶治疗，显然已康复。
