ArticleParasites & vectors2019
Prevalence and genotypic identification of Cryptosporidium spp., Giardia duodenalis and Enterocytozoon bieneusi in pre-weaned dairy calves in Guangdong, China.
Article in Parasites & vectors, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 1 of them a synthesis that pooled it.
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Who cites it
50 citing papers in PubMed, 1 synthesis or guideline pooled it, 91 citations in OpenAlex.
- Global prevalence of Giardia infection in nonhuman mammalian hosts: A systematic review and meta-analysis of five million animals.PLoS neglected tropical diseases · 2025Pooled it
- Seasonal Distribution and Genetic Diversity of Enterocytozoon bieneusi and Giardia duodenalis in Dairy Cattle from an Intensive Farm in Inner Mongolia, China.Acta parasitologica · 2026Article
- Seasonal Prevalence and Molecular Characterization ofLife (Basel, Switzerland) · 2026Article
- Dual detection and novel genotypes ofFrontiers in veterinary science · 2026Article
- Detection and genetic diversity ofFood and waterborne parasitology · 2025Article
- Occurrence and Multi-Locus Genotyping ofVeterinary sciences · 2025Article
- 18S/28S rDNA metabarcoding identifies Cryptosporidium parvum and Blastocystis ST1 as the predominant intestinal protozoa in hospital patients from Changchun, Northeast China.Parasites & vectors · 2025Article
- Molecular Epidemiology ofMicroorganisms · 2025Article
- Molecular prevalence and genetic characterization of Enterocytozoon bieneusi in cattle in a dairy farm in Türkiye.BMC veterinary research · 2025Article
- Prevalence and genotyping of Enterocytozoon bieneusi in cattle from Shanxi and Inner Mongolia, China.Scientific reports · 2025Article
- Prevalence ofInternational journal of veterinary science and medicine · 2025Article
- Genetic Characterization and Zoonotic Potential ofTransboundary and emerging diseases · 2025Article
- Prevalence and infestation dynamics of intestinal protozoa infections (cryptosporidiosis, giardiasis and eimeriosis) among calves in dairy farms of Kazakhstan.Frontiers in veterinary science · 2025Article
- Prevalence and characterization of Cryptosporidium in sika deer from Northern China.Parasite (Paris, France) · 2025Article
- Prevalence and zoonotic potential ofFrontiers in veterinary science · 2025Article
- Article
- Prevalence and Molecular Characterization ofAnimals : an open access journal from MDPI · 2024Article
- Molecular characterization and zoonotic potential of Cryptosporidium spp. and Giardia duodenalis in humans and domestic animals in Heilongjiang Province, China.Parasites & vectors · 2024Article
- Molecular characterization of common zoonotic protozoan parasites and bacteria causing diarrhea in dairy calves in Ningxia Hui Autonomous Region, China.Parasite (Paris, France) · 2024Article
- Molecular prevalence and genotype identification ofFrontiers in veterinary science · 2024Article
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Authors and funding
10 authors at 3 institutions in 2 countries.
Funding
Abstract
backgroundCryptosporidium spp., Giardia duodenalis and Enterocytozoon bieneusi are common enteric pathogens in humans and animals. Data on the transmission of these pathogens are scarce from Guangdong, China, which has a subtropical monsoon climate and is the epicenter for many emerging infectious diseases. This study was conducted to better understand the prevalence and identity of the three pathogens in pre-weaned dairy calves in Guangdong.
methodsThe occurrence and genetic identity of three pathogens were analyzed by polymerase chain reaction. PCR-positive products were sequenced to determine the species and genotypes. A Chi-square test was used to compare the prevalence of pathogens among sampling dates, age groups, or clinical signs.
resultsThe detection rates of Cryptosporidium spp., G. duodenalis and E. bieneusi were 24.0% (93/388), 74.2% (288/388) and 15.7% (61/388), respectively. Three Cryptosporidium species were detected, including C. bovis (n = 73), C. parvum (n = 12) and C. ryanae (n = 7); one animal had concurrence of C. bovis and C. parvum. C. parvum was the dominant species during the first two weeks of life, whereas C. bovis and C. ryanae were mostly seen at 3-9 weeks of age. Sequence analysis identified the C. parvum as subtype IIdA19G1. Assemblage E (n = 282), assemblage A (n = 1), and concurrence of A and E (n = 5) were identified among G. duodenalis-positive animals using multilocus genotyping (MLG). Altogether, 15, 10 and 17 subtypes of assemblage E were observed at the bg, gdh and tpi loci, respectively, forming 49 assemblage E MLGs. The highest detection rate of G. duodenalis was found in winter. Sequence analysis identified genotypes J (n = 57), D (n = 3) and one concurrence of J and D among E. bieneusi-positive animals. The detection rate of E. bieneusi was significantly higher in spring (38.0%; 41/108) than in summer (7.2%; 8/111) and winter (7.1%; 12/169).
conclusionsThese results indicate a common occurrence of C. parvum subtype IIdA19G1, G. duodenalis assemblage E, and E. bieneusi genotype J in pre-weaned dairy calves in Guangdong. More studies are needed to understand the unique genetic characteristics and zoonotic potential of the three enteric pathogens in the province.
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