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Guo W, Xue X, Li R, Liang R, Wang Z, Qin J, Duan C, Chen T, Yan X. Epidemiological investigation of Cryptosporidium in children with diarrhea in middle Inner Mongolia, China. Acta Trop 2024; 254:107177. [PMID: 38518835 DOI: 10.1016/j.actatropica.2024.107177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/25/2024] [Accepted: 03/05/2024] [Indexed: 03/24/2024]
Abstract
Cryptosporidia (Cryptosporidium) is a protozoan that is widely parasitic in the intestinal cells of humans and animals, and it is also an important zoonotic parasite. However, there is no epidemiological investigation on Cryptosporidium spp. infection in infants with diarrhea of Inner Mongolia, the largest livestock region in China. To investigate the prevalence of Cryptosporidium, 2435 fresh fecal samples were collected from children with diarrhea in Inner Mongolia Maternal and Child Health Care Hospital. Molecular characterization of Cryptosporidium was carried out based on its 18S rRNA and gp60 gene sequences. The overall prevalence was 12.85% (313/2435), and in Hohhot (12.15%), it was lower than that in the surrounding city (14.87%) (P < 0.05). Moreover, Cryptosporidium was detected in different seasons and sexes. Concerning the age of children with diarrhea, the prevalence of those age groups between 0 and 1 was obviously lower than others, and there were significant differences in the prevalence at different ages (P < 0.001). Analysis of the 18S rRNA gene sequence revealed that all the positive samples were Cryptosporidium parvum, and there were 5 subtypes (IIdA23G3, IIdA24G3, IIdA24G4, IIdA25G3, and IIdA25G4). To the best of our knowledge, the above subtypes have not been reported. Our results provide a relevant basis for control and education on food safety and foodborne illness prevention.
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Affiliation(s)
- Wenhui Guo
- Food Science and Engineering College of Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Xinyu Xue
- Food Science and Engineering College of Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Ruifeng Li
- Department of pediatrics, Inner Mongolia Maternal and Child Health Care Hospital, Hohhot 010020, China
| | - Ru Liang
- Department of pediatrics, Inner Mongolia Maternal and Child Health Care Hospital, Hohhot 010020, China
| | - Zixuan Wang
- Food Science and Engineering College of Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Jiashan Qin
- Food Science and Engineering College of Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Chao Duan
- Food Science and Engineering College of Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Tieyun Chen
- Food Science and Engineering College of Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Xinlei Yan
- Food Science and Engineering College of Inner Mongolia Agricultural University, Hohhot 010018, China.
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Zhao L, Wang M, Wang L, Wang Y, Zhang S, Zhang Z, Chai H, Fan W, Yi C, Ding Y, Wang J, Sulijid J, Liu Y. Prevalence and molecular characterization of Cryptosporidium spp. in dairy and beef cattle in Shanxi, China. Parasitol Res 2023; 123:8. [PMID: 38052995 DOI: 10.1007/s00436-023-08058-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 10/27/2023] [Indexed: 12/07/2023]
Abstract
Cryptosporidium spp. are key gastrointestinal protists in humans and animals worldwide. Infected cattle are considered the main source of cryptosporidiosis outbreaks in humans. However, little is known about the genetic makeup of Cryptosporidium populations in Shanxi province, China. We analyzed 858 fecal samples collected from farms in Shanxi. The presence of Cryptosporidium spp. was determined via polymerase chain reaction and subsequent sequence analysis of the small subunit rRNA gene as well as restriction fragment length polymorphism analysis. Cryptosporidium parvum was subtyped following sequence analysis of the 60 kDa glycoprotein gene (gp60). The overall prevalence of Cryptosporidium in cattle was 11.19%, with a prevalence of 13.30% and 8.67% in Lingqiu and Yingxian, respectively. The overall prevalence of Cryptosporidium in dairy and beef cattle was 10.78% and 11.50%, respectively. Cryptosporidium infection was detected across all analyzed age groups. The overall prevalence of Cryptosporidium in diarrhea and nondiarrhea samples was 18.24% and 9.72%, respectively, whereas that in intensively farmed and free-range cattle was 17.40% and 3.41%, respectively. We identified five Cryptosporidium species, with C. andersoni being the dominant species. Further, two cases of mixed infections of Cryptosporidium species were detected. All identified C. parvum isolates belonged to the subtype IIdA17G1.
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Affiliation(s)
- Li Zhao
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture and Rural Affairs, Hohhot, China
| | - Mingyuan Wang
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Lifeng Wang
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Yan Wang
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Shan Zhang
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Zhansheng Zhang
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Hailiang Chai
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Wenjun Fan
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Chao Yi
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Yulin Ding
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture and Rural Affairs, Hohhot, China
| | - Jinling Wang
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture and Rural Affairs, Hohhot, China
| | - Jirintai Sulijid
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture and Rural Affairs, Hohhot, China
| | - Yonghong Liu
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China.
- Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture and Rural Affairs, Hohhot, China.
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