Paramanandham Krishnamoorthy, Mohankumar Ashwini, Puttahonnappa Suresh Kuralayanapalya, Susan Jacob Siju, Roy Parimal
ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Post Box No.6450, Ramagondanahalli, Yelahanka, Bengaluru 560064, Karnataka, India.
ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Post Box No.6450, Ramagondanahalli, Yelahanka, Bengaluru 560064, Karnataka, India.
Res Vet Sci. 2019 Apr;123:159-170. doi: 10.1016/j.rvsc.2019.01.013. Epub 2019 Jan 15.
In the present study, the prevalence of Anaplasma species in diary animals from India and World was estimated using meta-analysis. Based on systematic review of studies on Anaplasma species from India [35] and World [66] from 1988 to 2017 and 1978-2017, respectively, using online databases and offline literatures, meta-analysis using meta package in R-Software was done. Prevalence of Anaplasma species in India and World were 11% [95% level, Confidence Interval[CI] 7-16%, Prediction Interval[PI] 1-69%] and 39% [95% level, CI 30-49%, PI 2-95%], and these were obtained using 31,117 and 46,365 samples, respectively. Period-wise analysis revealed high Anaplasma species prevalence before 2011 for India and the World than from 2011 through 2017. Zone-wise prevalence indicated high prevalence in Central zone [61%] and low in West and South zones [6%] in India, and continent-wise, it was high in South America [82%]. The studies used methods including blood smear examination, serology and nucleic acid-based techniques and revealed high prevalence in serology for India [34%] and World [46%], low prevalence by blood smear for India [7%] and World [21%], but higher sensitivity using nucleic acid-based techniques. Species-wise indicated higher prevalence in cattle [12%] than buffaloes [2%] in India. Prevalence was lower in India compared to the World and higher in South America. Overall, anaplasmosis causes low productivity in dairy animals and economic loss to dairy farmers. Hence, there is a need to control Anaplasma infections in high risk areas by adopting effective therapeutic and preventive measures so as to improve the economic benefits in dairy farming.
在本研究中，通过荟萃分析估计了印度及全球奶牛中无形体属物种的流行率。分别基于对1988年至2017年印度[35]以及1978 - 2017年全球[66]无形体属物种研究的系统综述，利用在线数据库和线下文献，使用R软件中的meta包进行荟萃分析。印度和全球无形体属物种的流行率分别为11%[95%水平，置信区间[CI]7 - 16%，预测区间[PI]1 - 69%]和39%[95%水平，CI 30 - 49%，PI 2 - 95%]，分别使用了31,117和46,365个样本得出这些数据。按时间段分析显示，印度和全球在2011年之前无形体属物种的流行率高于2011年至2017年期间。按区域划分的流行率表明，印度中部地区流行率高[61%]，西部和南部地区低[6%]，按大陆划分，南美洲流行率高[82%]。这些研究使用的方法包括血液涂片检查、血清学和基于核酸的技术，结果显示印度[34%]和全球[46%]血清学检测的流行率高，印度[7%]和全球[21%]血液涂片检测的流行率低，但基于核酸的技术灵敏度更高。按物种划分表明，印度牛[12%]的流行率高于水牛[2%]。印度的流行率低于全球，南美洲的流行率更高。总体而言，无形体病会导致奶牛生产力低下以及奶农经济损失。因此，有必要通过采取有效的治疗和预防措施来控制高风险地区的无形体感染，以提高奶牛养殖的经济效益。
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