Dominance of the zoonotic pathogen Cryptosporidium meleagridis in broiler chickens in Guangdong, China, reveals evidence of cross-transmission
文献类型： 外文期刊
作者： Lin, Xuhui 1 ; Xin, Luyao 1 ; Qi, Meng 3 ; Hou, Minyu 3 ; Liao, Shenquan 1 ; Qi, Nanshan 1 ; Li, Juan 1 ; Lv, Minna 1 ; Cai, Haiming 1 ; Hu, Junjing 1 ; Zhang, Jianfei 1 ; Ji, Xiangbo 4 ; Sun, Mingfei 1 ;
作者机构： 1.Minist Agr & Rural Affairs, Guangdong Lab Lingnan Modern Agr Sci & Technol, Key Lab Livestock Dis Prevent Guangdong Prov, Zhaoqing Maoming Branch Ctr,Key Lab Prevent & Con, Guangzhou 510640, Guangdong, Peoples R China
2.Guangdong Acad Agr Sci, Inst Anim Hlth, Guangzhou 510640, Guangdong, Peoples R China
3.Tarim Univ, Coll Anim Sci, Alar 843300, Xinjiang, Peoples R China
4.Chinese Acad Agr Sci, Lanzhou Vet Res Inst, Lanzhou 730046, Gansu, Peoples R China
5.Henan Univ Anim Husb & Econ, Key Lab Innovat & Utilizat Unconvent Feed Resourc, Zhengzhou 450046, Henan, Peoples R China
关键词： Cryptosporidium; Subtyping; Chicken; Zoonotic; China
期刊名称：PARASITES & VECTORS （ 影响因子：4.047； 五年影响因子：4.223 ）
ISSN： 1756-3305
年卷期： 2022 年 15 卷 1 期
页码：
收录情况： SCI
摘要： Background: Cryptosporidium is one of the most prevalent parasites infecting both birds and mammals. To examine the prevalence of Cryptosporidium species and evaluate the public health significance of domestic chickens in Guangdong Province, southern China, we analyzed 1001 fecal samples from 43 intensive broiler chicken farms across six distinct geographical regions. Methods: Individual DNA samples were subjected to nested PCR-based amplification and sequencing of the small subunit of the nuclear ribosomal RNA gene (SSU rRNA). Analysis of the 60 kDa glycoprotein gene (gp60) was performed to characterize the subtypes of C. meleagridis. Results: The overall prevalence of Cryptosporidium was 13.2% (95% CI 11.1-15.3) (24 of 43 farms), with C. meleagridis (7.8%), C. baileyi (4.8%) and mixed infections (0.6%). Using the gp60 gene, three subtype families, IIIb, IIIe and IIIg, were identified, including six subtypes: one novel (IIIgA25G3R1a) and five previously reported (IIIbA23G1R1c,IIIbA24G1R1, IIIbA21G1R1a, IIIeA17G2R1 and IIIeA26G2R1). Within these subtypes, five known subtypes were genetically identical to those identified in humans. Conclusions: This is the first report of C. meleagridis in chickens from Guangdong. The frequent occurrence of C. meleagridis in domestic chickens and the common C. meleagridis subtypes identified in both humans and chickens is of public health significance. Our study indicates that broiler chickens represent a potential zoonotic risk for the transmission of Cryptosporidium in this region.
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