Miller R E, Trampel D W, Desser S L, Boever W J
J Am Vet Med Assoc. 1983 Dec 1;183(11):1241-4.
An adult European eider (Somateria mollissima mollissima) died at the St Louis Zoo and was found to be infected with numerous blood and tissue stages of Leucocytozoon simondi. Necropsy revealed massive air sac aspergillosis, but histologic examination revealed a diffusely distributed protozoon organism that was identified as L simondi. Examination of tissues from a previously necropsied European eider and from 2 American eiders (Somateria mollissima dresseri) that later died also revealed evidence of L simondi infection.
一只成年欧洲绒鸭（Somateria mollissima mollissima）在圣路易斯动物园死亡，尸检发现其感染了大量寄生于血液和组织中的西氏白细胞原虫（Leucocytozoon simondi）。尸检显示存在严重的气囊曲霉菌病，但组织学检查发现一种弥漫分布的原生生物，经鉴定为西氏白细胞原虫。对一只之前已进行过尸检的欧洲绒鸭以及随后死亡的两只美洲绒鸭（Somateria mollissima dresseri）的组织检查也发现了感染西氏白细胞原虫的证据。
