陕西省（中国西北部）奶牛山羊弓形体血清感染率调查。
Seroprevalence of Toxoplasma gondii infection in dairy goats in Shaanxi Province, Northwestern China.
机构信息
College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi Province 712100, PR China.
出版信息
Parasit Vectors. 2011 Apr 1;4:47. doi: 10.1186/1756-3305-4-47.
BACKGROUND
Toxoplasma gondii is an important zoonotic pathogen causing significant human and animal health problems. Infection in dairy goats not only results in significant reproductive losses, but also represents an important source of human infection due to consumption of infected meat and milk. In the present study we report for the first time seroprevalence of T. gondii infection in Guanzhong and Saanen dairy goats in Shaanxi province, Northwestern China.
RESULTS
Sera from 751 dairy goats from 9 farms in 6 counties were examined for T. gondii antibodies with an indirect haemagglutination (IHA) test. Antibodies to T. gondii were detected in 106 (14.1%) serum samples, with antibody titres ranging from 1:64 to 1:1024. Seropositive goats were found in all 9 farms and seroprevalences in Guanzhong (16.3%, 75/461) and Saanen (10.7%, 31/290) dairy goats were not statistically significantly different. All the factors (sex, age and location) reported in the present study affected prevalence of infection, and seroprevalence increased with age, suggesting postnatal acquisition of T. gondii infection.
CONCLUSIONS
The results of the present survey indicate that infection by T. gondii is widely prevalent in dairy goats in Shaanxi province, Northwestern China, and this has implications for prevention and control of toxoplasmosis in this province.
背景
刚地弓形虫是一种重要的动物源性致病菌，对人类和动物的健康造成了重大影响。乳山羊感染弓形虫不仅会导致严重的繁殖损失，而且由于食用受感染的肉类和牛奶，也会成为人类感染的重要来源。本研究首次报告了中国西北陕西省关中地区和萨能奶山羊的弓形虫血清流行率。
结果
采用间接血凝试验（IHA）检测了来自 9 个农场的 751 份血清样本中的 T. gondii 抗体。在 106 份血清样本中检测到 T. gondii 抗体，抗体滴度范围为 1:64 至 1:1024。在 9 个农场均发现了阳性血清，关中（16.3%，75/461）和萨能（10.7%，31/290）奶山羊的血清阳性率无统计学差异。本研究报告的所有因素（性别、年龄和地点）均影响感染率，且感染率随年龄增长而增加，提示后天获得弓形虫感染。
结论
本调查结果表明，陕西省的奶山羊广泛感染弓形虫，这对该省的弓形虫病预防和控制具有重要意义。
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