Schiefer B, Greenfield J
Can J Comp Med. 1974 Apr;38(2):105-10.
The incidence of porcine pleuropneumonia caused by Hemophilus parahemolyticus has shown a marked increase in recent years in some countries. Isolation of a strain distinct from European serotypes was made from a natural outbreak of the disease in pigs in Saskatchewan. Experimentally infected pigs did not develop clinical signs but pathologic-anatomic studies of lungs revealed the presence of necrotizing fibrinous pneumonia with intense proliferation of mesenchymal tissue elements. Similar extensive fibroblastic activity had been found to be a typical feature in the natural infection. It is speculated that the Saskatchewan strain may have invasive patterns different from European serotypes.
近年来，在一些国家，由副溶血嗜血杆菌引起的猪胸膜肺炎发病率显著上升。从萨斯喀彻温省猪的自然发病疫情中分离出了一种与欧洲血清型不同的菌株。实验感染的猪未出现临床症状，但对肺部进行的病理解剖学研究显示存在坏死性纤维素性肺炎，伴有间充质组织成分的强烈增殖。在自然感染中也发现类似的广泛成纤维细胞活性是一个典型特征。据推测，萨斯喀彻温菌株可能具有与欧洲血清型不同的侵袭模式。
