Feline chlamydiosis

Chlamydiae are an important cause of acute and chronic conjunctivitis in cats. Until recently, only one organism was thought to infect cats, Chlamydophila felis (previously Chlamydia psittaci var. felis). Recently, other Chlamydia-like organisms belonging to the family Parachlamydiaceae, which comprises organisms that reside and proliferate within free-living amoeba, have been identified in cats with neutrophilic and eosinophilic conjunctivitis. The relative importance of these organisms and their amoebic hosts requires investigation. There is also weak evidence that chlamydiae may also be capable of causing reproductive tract disease and lameness in cats. Diagnosis of chlamydial conjunctivitis requires use of specialized culture techniques or the polymerase chain reaction. The antibiotic of choice to treat these infections is doxycycline; azithromycin is less effective. All cats in the household should be treated simultaneously. The zoonotic potential of these organisms appears low, but some precaution is warranted when handling affected cats.     

Psittacosis/avian chlamydiosis

Considerable progress continues to be made in understanding chlamydial organisms, their host species, diagnosis, and treatment. (1-3) Thus, national guidelines are updated annually to provide a standardized approach to handling infections in humans and birds. (2-3) Prior to development of these guidelines, considerable variation in approach by state agencies has been documented. (39) A more recent national assessment of state regulations and procedures has not been conducted. Decreasing imports of birds and increasing education may contribute to a reduction in human risk from avian infections. Keeping new birds separate from old birds in aviaries and poultry production facilities may reduce the incidence of avian chlamydiosis. Although wide-scale testing of birds may not be cost effective, (28) focal testing and treatment may help reduce human risk. The recent loss of a major source for pelleted feed for small birds, such as budgerigars, was a severe setback for veterinarians and local agencies in managing this disease. However, new medication formulas under development may help to address this problem. (2-3)     

猪衣原体病血清流行病学调查

连续三年对猪衣原体病进行血清学调查.采用间接血凝试验(IHA),对来自本地养殖场的4563份样品和来自屠宰场的4809份外来猪样品进行了猪血清抗衣原体抗体检测,总阳性率为14.97%.其中本地养殖场2004-2006年的阳性率分别为:2 5.5 3%、19.62%和1.89%;屠宰场外来猪的阳性率分别为:42.42%、15.1%和2.36%.     

Pathology of experimental chlamydiosis in chicks

Twelve one-day-old chicks were experimentally inoculated with Chlamydia psittaci derived from turkeys. Acute chlamydial septicemic lesions were induced by the inoculation into the air sac and trachea. No lesions were produced by the esophageal injection. Clinically, the affected chicks showed emaciation and mouth breathing, and were inactive while some birds died. Grossly, they had hepatomegaly, splenomegaly and airsacculitis. Histopathologically, fibrinopurulent airsacculitis, pneumonia and bronchitis, multiple fibrinous serositis in the hepatic and splenic capsules, peri- and epicardium, and mesenterium, focal endoarteritis in the aortae, activation of reticuloendothelial cells in the spleen, and hepatic necrosis were noted. Immunohistochemically, chlamydial antigen granules were present in the cytoplasm of epithelial cells of the respiratory system, hepatocytes, macrophages in the air sac, lung, serous membrane, liver, spleen, aortae, reticuloendothelial cells in the spleen, and mesothelial cells in various organs or tissues. Chlamydial multiplication in the cells of the organs or tissues involved was preceded to form the lesions.     

规模养猪场猪衣原体病的血清学调查

动物衣原体病是由鹦鹉热衣原体引起的一种人畜共患传染病。衣原体病的病原体是衣原体科衣原体属的鹦鹉热衣原体和沙眼衣原体,它能引起多种动物和人的三十多种传染病。猪衣原体病主要表现为妊娠母猪流产、死产及产弱仔。新生仔猪发生肺炎、肠炎、关节炎、结膜炎和脑炎。给养殖业带来很大的经济损失,并且危害人类的健康。几年来,铁岭市发展集约化养殖业速度之快,引进猪源之多,出现流产、早产等症状的猪群增加。为了掌握基本情况,查清铁岭市猪衣原体的感染状况和流行趋势,工作人员于2003年对部分猪场应用间接血凝试验(IHA)进行了血清学调查,结果报告如下。     

母猪衣原体病的诊断与防治

近年来 ,关于母猪流产报道不少 ,一般认为由乙型脑炎、或细小病毒、布鲁氏菌病、繁殖障碍型猪瘟、伪狂犬病以及“蓝耳病”等引起。呼吸系统疾病通常认为由猪肺疫、沙门氏菌、霉形体肺炎、萎缩性鼻炎以及链球菌性肺炎等引起。至于猪衣原体性流产和衣原体性肺炎报道甚少。 1 999年 1 0月份 ,福建省莆田市某猪场繁殖母猪突然发生流产、死产、早产。起初因治疗不力 ,终呈肺部病变而死亡。后经采样送检至湖北省农科院畜牧兽医研究所实验室诊断为猪衣原体病。1　发病情况该场共饲养瘦肉型良种母猪 2 92头 ,公猪 5头 ,年可上市肉猪 6 0 0 0多头。母…     

Occurrence of coxiellosis and chlamydiosis in Sumava

The occurrence of antibodies to C. burnetii and Chl. psittaci was studied in the herds of cattle transported from southern Moravia to the pastures of the Sumava Mountains. Q-fever persists in latent state in the cattle grazing in the Sumava Mts. and causes no manifest infections in man. The finding of the rickettsia in the small mammals and their ectoparasites documents the probability of contact with the causal agent in the excretions of cattle in the pastures. Veterinary and human medical services should be aware of a possibility of occurrence of Q-fever and chlamydiosis not only in southern Moravia but also in the Sumava Mts. and in other areas.     

家兔衣原体病的诊治

河南省周口地区某兔场从 2 0 0 0年 2月到 5月间 ,陆续发生多起以妊娠母兔流产、产死胎、死亡为特征的疫病 ,经实验室诊断 ,初步诊断为家兔衣原体病。1　发病情况及临床症状该兔场从 2 0 0 0年 2月开始 ,几乎所有的妊娠母兔发病 ,主要表现为 :妊娠母兔在产前 1～ 2天 ,精神沉郁     

青海天峻县牦牛衣原体病的血清学调查

应用表原体抗体间接血凝检测试剂,对青海省天峻县的214份牦牛血清进行了衣原体抗体的检测和分析.结果捡出21份阳性血清,血清阳性率为9.81%,表明该县牦牛群中存在衣原体病的流行.     

绒山羊衣原体病的防治

绒山羊衣原体病是由鹦鹉热衣原体引起的一种传染病。临床上以发热、流产、死产和产出弱羔为特征,是危害绒山羊的主要疾病之一。     

奶牛衣原体病PCR诊断方法的研究

牛衣原体病是由鹦鹉热衣原体感染牛引起的一种地方性的接触性传染病,以妊娠母牛流产、早产、死产或产无活力的犊牛为主要特征。该病还有称牛流行性流产、牛地方性流产、牛新立克次体性流产。牛衣原体病的诊断有病原学诊断,包括病原分离鉴定;血清学诊断包括补体结合(CF)试验、间     

乳牛衣原体病灭活疫苗的研制

将免疫原性稳定的鹦鹉热衣原体SX5菌株灭活，加入油佐剂制备乳牛衣原体病灭活疫苗，并对疫苗的安全性进行了检测。用该疫苗对成年牛和犊牛进行了最小免疫量试验、效力试验和免疫持续期试验；结果表明，最小免疫量分别为3mL和5mL，平均免疫保护率达94．4％。免疫持续期达10个月。疫苗保存期试验表明，在4℃条件下可保存12个月。本动物安全试验和田间小试免疫证明，该疫苗安全性好，乳牛注射疫苗后饮食、产乳量及注苗部位没有明显的异常变化。     

甘肃省猪衣原体病的血清学调查

1998～2000年，对全省未进行过猪衣原体病免疫的11个地州市的868份猪血清应用间接血凝(IHA)试验进行抗体检测。结果在11个地市中均检出抗体阳性猪血清，全省猪衣原体病的阳性检出率平均为34．91％，阳性检出率最高达52．48％，最低13．95％。