Ognianov D, Panova M, Genchev G A
Vet Med Nauki. 1978;15(3):26-31.
Two isolates, identified as Chlamydia (neorickettsia) were obtained from the lacrimal secretion of calves with an acute infection on two of a total of four investigated farms with a record of infectious keratoconjunctivitis. In about 70% of the calves that survived there were complement-fixing antibodies against the neorickettsial antigen, the titers ranging from 1:8 to 1:64. Calves that yielded the causative agent were investigated in terms of the antibody dynamics. In the remaining herds no specific antibodies were demonstrated in animals that had survived. One of the isolated strains was used to infect (via the external camera oculi) a rabbit. Acute keratoconjunctivitis followed, and the blood serum of the rabbit was found to contain complement-fixing antibodies of a titer within the 1:8-1:16 range from the 30th day on. A neorickettsial strain was also isolated from the ocular secretion of a dog with serofibrinous keratoconjunctivitis, and this was regarded as a rarely encountered finding.
在总共四个有传染性角膜结膜炎记录的被调查农场中，有两个农场的急性感染小牛泪液分泌物中分离出两株被鉴定为衣原体（新立克次体）的菌株。在大约70%存活下来的小牛中，存在针对新立克次体抗原的补体结合抗体，滴度范围为1:8至1:64。对分离出病原体的小牛进行了抗体动态研究。在其余牛群中，存活动物未检测到特异性抗体。其中一株分离菌株用于（通过眼外眦）感染一只兔子。随后出现急性角膜结膜炎，从第30天起，兔子血清中补体结合抗体滴度在1:8至1:16范围内。还从一只患有浆液性纤维蛋白性角膜结膜炎的狗的眼分泌物中分离出一株新立克次体菌株，这被视为罕见发现。
