Archives of Microbiology & Immunology


ISSN: 2572-9365

Abstracting and Indexing

Editor In Chief

Masashi Emoto

Professor of Laboratory of Immunology
Department of Laboratory Sciences
Gunma University Graduate School of Health Sciences
Gunma, Japan

Shahinaz Taha


Shahinaz Taha published latest article in Parasitology research entitled Molecular characterization of bovine Cryptosporidium isolated from diarrheic calves in the Sudan. This article is available in PubMed with an unique identification number PMID: 28900722 and it is published in 2017. The coauthors of this article are Taha S, Elmalik K, Bangoura B, Lendner M, Mossaad E, Daugschies A.

Research Interest

Immunology, Allergy

Latest Publication Details

Article Title: Molecular characterization of bovine Cryptosporidium isolated from diarrheic calves in the Sudan.

Co-Author(s): Taha S, Elmalik K, Bangoura B, Lendner M, Mossaad E, Daugschies A

Affiliation(s): Department of Preventive Medicine and Veterinary Public Health, Faculty of Veterinary Medicine, University of Khartoum, P.O. Box 32, Khartoum North, Sudan.

PMID 28900722, Year 2017

Abstract: Cryptosporidiosis is a common protozoan infection causing morbidity and mortality in young cattle and may be zoonotically transmitted to humans. So far, there is no data available on the presence of Cryptosporidium spp. in the Sudan. The aim of this study was to isolate, identify, and genotype Cryptosporidium oocysts sampled from diarrheic calves housed at different farms in three different municipalities in Khartoum State (Khartoum, Khartoum North, Omdurman). A total of 149 fecal samples were evaluated microscopically for the presence of Cryptosporidium oocysts using the modified Ziehl-Neelsen staining method and 87 (58.3%) samples tested positive. Positive and negative samples were further analyzed by nested PCR targeting the SSU rRNA region. Positive samples were subjected to restriction enzyme analysis of PCR amplicons (PCR-RFLP). Nested PCR identified Cryptosporidium DNA in 53 samples (35.5%); restriction digestion of the PCR products revealed the presence of C. parvum (73.5%), C. ryanae (13.2%), C. andersoni (7.5%), and C. bovis (1.8%). Species distribution was clearly related to age with C. parvum being the predominant species in dysenteric pre-weaned calves. Sequencing of three genes (SSU rRNA, COWP, and GP60) for three C. parvum isolates originating from the three different municipalities showed that all belong to C. parvum subtype family IId. Based on data obtained by GP60, sequencing the two C. parvum isolates from Khartoum and Omdurman represent subtype IIdA18G1, whereas oocysts isolated in Khartoum North belong to subtype IIdA19G1. The observed genotypes are zoonotic and thus C. parvum in calves is potentially a health risk to humans in Khartoum State, Sudan. To the best of our knowledge, this is the first reported attempt to characterize Cryptosporidium isolated from cattle in the Sudan.

Journal: Parasitology research

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