Prevalence of Cryptosporidium infection in cattle in Isfahan, Iran.

Department of Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
Journal of Eukaryotic Microbiology (Impact Factor: 2.91). 01/2007; 54(1):100-2. DOI: 10.1111/j.1550-7408.2006.00236.x
Source: PubMed

ABSTRACT Cryptosporidium are commonly identified as intestinal pathogens in humans and animals. Fecal samples from 480 cattle randomly selected from 30 regions in Isfahan, Iran, were examined to investigate the prevalence of Cryptosporidium infection. Cryptosporidium oocysts were identified by using sheather's concentration and the Ziehl-Neelsen modified staining technique in 30 of 480 cattle ranging from less than 6 mo of age to older than 1 yr of age. Infected animals were found in 86.6% (26/30) of regions investigated. Overall prevalence of infection was 6.25%, but higher in cattle less than 6 mo of age (10.8%) and this was statistically significant (P<0.05). Both sexes of cattle were infected with Cryptosporidium parasites, but prevalences were higher in diarrheic (56.7%) than in non-diarrheic (39%) cattle. Cryptosporidium appears to be prevalent in cattle in Isfahan.

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    ABSTRACT: The protozoan intestinal parasite Cryptosporidium commonly infects cattle throughout the world and Iran. The present study was undertaken to determine the abundance and associated risk factors of Cryptosporidium infection in cattle herds of northwestern Iran. A total number of 246 fecal samples from 138 (56.1%) diarrheic (D) and 108 (43.9%) non-diarrheic (ND) cattle were randomly collected and examined by fecal smears stained with Ziehl-Neelsen. For molecular specification, DNA was extracted from collected Cryptosporidium oocysts and a fragment of 1325 bp in size from 18S rRNA gene was amplified. The overall prevalence of Cryptosporidium infection was 22.3% (55/246). The prevalence of Cryptosporidium infection in examined calves less than 6 month-old was significantly higher than adult cattle. C. parvum and C. andersoni were identified in 20.3% (50/246) and 2.03% (5/246) of examined cattle, respectively. The highest prevalence of C. parvum infection was found in D calves < 6 month-old (13.4%, 33/246), while C. andersoni was only detected in ND cattle (8.9%, 22/246). There was significant difference in the prevalence between male than female cattle. There was no significant difference between prevalence and seasons of investigation. It was concluded that C. parvum was the prevalent species in younger animals compared to older ones as a potentially zoonotic agent in the region.
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    ABSTRACT: Aim: Cryptosporidium is a protozoan parasite that causes diarrhea, which is typically a short-lasting benign infection.The aim of the present study was to determinate the prevalence of Cryptosporidium infection in lambs and goat kids in Kurdistan district, Iran. Materials and Methods: A total of 1200 fecal samples were obtained from diarrheic and non-diarrheic lambs and goat kids aged 1 to 6 months from 48 villages in the Kurdistan province, west of Iran. The samples were tested for the presence of Cryptosporidium spp. oocysts using modified Ziehl–Neelsen staining method. Results: Cryptosporidium spp. oocysts were present in 10.24% of lambs and in 18.86% of goat kids. Both diarrhea and Cryptosporidium spp. oocysts were observed in 64.37% (56/87) of lambs and in 30.51% (18/59) of goat kids. Cryptosporidium spp. infection rates were significantly higher in diarrheic than in non-diarrheic groups. The highest rate of infection was found in an animal aged one month. Furthermore, the prevalence of the infection according to age groups and consistency of feces was found to be statistically significant. Conclusion: The presence of Cryptosporidium spp. in lambs and goat kids in Kurdistan indicates that this protozoan parasite should also be considered in the etiology of lambs and goat kids exhibiting diarrhea. Key words: Cryptosporidium spp., lambs, goat kids, prevalence, Iran
    Veterinary World 12/2013; 6(12):974-977. DOI:10.14202/vetworld.2013.964-977


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Jun 1, 2014