ArticleParasites & vectors2024
Molecular characterization and zoonotic potential of Cryptosporidium spp. and Giardia duodenalis in humans and domestic animals in Heilongjiang Province, China.
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14 citing papers in PubMed, 18 citations in OpenAlex.
- Occurrence and Diversity of Cryptosporidium spp. and Giardia duodenalis in Animals in Portugal: Novel Data and Public Health Implications.Zoonoses and public health · 2026Article
- Cryptosporidiosis at the human-ruminant interface in Aswan, Egypt: a one health epidemiological study using microscopy, immunofluorescence, and PCR.BMC veterinary research · 2026Article
- Molecular detection and zoonotic potential ofFood and waterborne parasitology · 2026Article
- Detection of Cryptosporidium and Giardia duodenalis in Reptiles in Thailand.Veterinary medicine and science · 2026Article
- Occurrence and Multi-Locus Genotyping ofVeterinary sciences · 2025Article
- First Molecular Characterization of Cryptosporidium and Giardia from Pigs in Bangladesh.Acta parasitologica · 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
- Review
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- Intestinal Parasitic Infections in Ghana: A Review of Infections and the Risk of Zoonotic Transmission.BioMed research international · 2025Review
- Review
- Occurrence rate and species and subtypes of Cryptosporidium spp. in pet dogs in Yunnan Province, China.BMC microbiology · 2024Article
- Evaluating prevalence, risk factors, and diagnostic techniques forFrontiers in veterinary science · 2024Article
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Authors and funding
8 authors at 1 institution in 1 country.
Funding
Abstract
backgroundCryptosporidiosis and giardiasis are significant parasitic diseases shared between humans and domestic animals. Due to the close contact between humans and domestic animals in rural areas, it is important to consider the potential transmission of zoonotic parasites from infected domestic animals to humans. This investigation aimed to determine the prevalence and molecular characteristics of Cryptosporidium spp. and Giardia duodenalis in domestic animals and villagers.
methodsA total of 116 fecal samples from villagers and 686 fecal samples from domestic animals in Heilongjiang Province, China, were analyzed for two parasites using nested polymerase chain reaction (PCR) targeting various genetic loci and DNA sequence analysis of the PCR products.
resultsBy sequence analysis of the SSU rRNA gene, the prevalence of Cryptosporidium in humans was 0.9% (1/116), with one species of C. parvum (n = 1) detected; among domestic animals, the prevalence was 2.6% (18/686), with five species identified: C. suis (n = 7) and C. scrofarum (n = 7) in pigs, C. meleagridis (n = 1) in chickens, C. andersoni (n = 1) in cattle, and C. canis (n = 2) in foxes. C. parvum and C. canis were further subtyped as IIdA19G1 and XXa4 on the basis of gp60 gene. Regarding G. duodenalis, based on the SSU rRNA, bg, gdh, and tpi genes, the prevalence in domestic animals was 5.1% (31/608), with three assemblages identified: A (n = 1) in pigs, D (n = 1) in foxes, and E (n = 27) in geese, cattle, pigs, ducks, and sheep, along with mixed infection of A + E (n = 1) in one pig and B + E (n = 1) in one sheep. No G. duodenalis was detected in humans (0/116).
conclusionsThe present results show that no overlap of subtypes between animals and villagers was found in Cryptosporidium spp. and G. duodenalis, indicating a minor role of domestic animals in infecting humans in this population. However, the presence of zoonotic protozoa in domestic animals highlights the need for special attention to high-risk individuals during close contact with domestic animals.
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