Windsor R S, Masiga W N
Res Vet Sci. 1977 Sep;23(2):224-9.
An attempt was made to transmit contagious bovine pleuropneumonia (CBPP) from 22 animals recovered from artificial infection to healthy animals. Despite close contact and the imposition of a number of stresses no disease was transmitted. An unsuccessful attempt was made to reactivate old CBPP lesions by corticosteroid treatment, and by splenectomy. Four animals recovered from artificial infection did not become reinfected when put in contact with acute disease. Seven animals were reinoculated with Mycoplasmamycoides sub-species mycoides by endobronchial intubation. No clinical disease resulted. It is concluded that sequestra do not break down easily and that it is difficult to reinfect recovered animals. It is suggested that in field outbreaks of obscure origin, investigation should be thorough before it is concluded that an animal with an old sequestrum was responsible.
曾尝试将22只从人工感染中康复的动物身上的传染性牛胸膜肺炎（CBPP）传染给健康动物。尽管有密切接触并施加了多种应激因素，但疾病并未传播。曾尝试通过皮质类固醇治疗和脾切除术重新激活陈旧的CBPP病变，但未成功。4只从人工感染中康复的动物在与急性病动物接触时未再次感染。7只动物通过支气管内插管再次接种了丝状支原体丝状亚种。未引发临床疾病。得出的结论是，死骨不易分解，且难以再次感染康复的动物。建议在不明来源的野外疫情爆发中，在得出患有陈旧死骨的动物是病因的结论之前，应进行彻底调查。
