Molecular detection and characterization of Cryptosporidium spp., Giardia duodenalis, and Enterocytozoon bieneusi infections in dromedary camels (Camelus dromedaries) in Egypt

Faculty Medicine Year: 2023
Type of Publication: ZU Hosted Pages:
Authors:
Journal: Front Vet Sci Front Vet Sci Volume:
Keywords : Molecular detection , characterization , Cryptosporidium spp., Giardia    
Abstract:
Introduction: Few studies have investigated the occurrence of microeukaryotic gut parasites in dromedary camels in Egypt, and the majority of these investigations are based on microscopic analysis of fecal material. Methods: Herein, we assessed the occurrence, molecular diversity, and zoonotic potential of protozoan (Cryptosporidium spp. and Giardia duodenalis) and microsporidian (Enterocytozoon bieneusi) pathogens in individual fecal samples (n = 102) of dromedary camels with (n = 26) and without (n = 76) diarrhea from Aswan Governorate, Upper Egypt. Other factors possibly associated with an increased risk of infection (geographical origin, sex, age, and physical condition) were also analyzed. The SSU rRNA or ITS genes were targeted by molecular (PCR and Sanger sequencing) techniques for pathogen detection and species identification. Results and discussion: The most abundant species detected was G. duodenalis (3.9%, 4/102; 95% CI: 1.1–9.7), followed by Cryptosporidium spp. (2.9%, 3/102; 95% CI: 0.6–8.4). All samples tested negative for the presence of E. bieneusi. Sequence analysis data confirmed the presence of zoonotic C. parvum (66.7%, 2/3) and cattle-adapted C. bovis (33.3%, 1/3). These Cryptosporidium isolates, as well as the four Giardia-positive isolates, were unable to be amplified at adequate genotyping markers (Cryptosporidium: gp60; Giardia: gdh, bg, and tpi). Camels younger than 2 years old were significantly more likely to harbor Cryptosporidium infections. This connection was not statistically significant, although two of the three cryptosporidiosis cases were detected in camels with diarrhea. The spread of G. duodenalis infections was unaected by any risk variables studied. This is the first report of C. parvum and C. bovis in Egyptian camels. Frontiers in Veterinary Science 01 frontiersin.orgected by any risk variables studied. This is the first report of C. parvum and C. bovis in Egyptian camels.
   
     
 
       

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