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  1. Article ; Online: Betaretrovirus infections in dromedary camels in Saudi Arabia.

    Hemida, Maged Gomaa / Alnaeem, Abdelmohsen A

    Veterinary medicine and science

    2022  Volume 8, Issue 3, Page(s) 1330–1336

    Abstract: Background: Retroviral infections have been reported in many species of animals, especially cattle, sheep and goats. However, there are no available reports about retrovirus infection in dromedary camels. Several dromedary camels showed visible tumor- ... ...

    Abstract Background: Retroviral infections have been reported in many species of animals, especially cattle, sheep and goats. However, there are no available reports about retrovirus infection in dromedary camels. Several dromedary camels showed visible tumor-like lesions on and around the nostrils as well as around the eyes.
    Objectives: Following are the objectives: to identify the causative agents of these identified tumours in dromedary camels and to perform molecular characterization of the detected strains of the causative agent.
    Methods: We extracted the nucleic acids from some fresh lesions out of these animals, and then amplified some key retrovirus genes. We amplified several regions of the rotavirus genome using the PCR technique. The obtained sequences were assembled and the phylogenetic trees were conducted per each target retrovirus gene.
    Results: Our results revealed a high degree of identity to some retroviruses of sheep. Phylogenetic analysis based on some retrovirus genes revealed that the causative agents of these lesions are closely related to sheep retroviruses, particularly the Jaagsiekte sheep Retrovirus (JSRV) and the ENTV.
    Conclusions: To the best of our knowledge, this is the first report of retrovirus infections in dromedary camels in the Arabian Peninsula. This highlights the possible species jump for the retrovirus from sheep and goats to the dromedary camels, which live in close proximity with these animals in many parts of the world, especially the Arabian Peninsula.
    MeSH term(s) Animals ; Betaretrovirus/genetics ; Camelus ; Cattle ; Cattle Diseases ; Goat Diseases ; Goats ; Phylogeny ; Retroviridae Infections/veterinary ; Saudi Arabia/epidemiology ; Sheep ; Sheep Diseases
    Language English
    Publishing date 2022-02-03
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2819409-3
    ISSN 2053-1095 ; 2053-1095
    ISSN (online) 2053-1095
    ISSN 2053-1095
    DOI 10.1002/vms3.760
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: West Nile virus infection in horses in Saudi Arabia (in 2013-2015).

    Hemida, Maged G / Perera, Ranawaka A P M / Chu, Daniel K W / Ko, Ronald L W / Alnaeem, Abdelmohsen A / Peiris, Malik

    Zoonoses and public health

    2018  Volume 66, Issue 2, Page(s) 248–253

    Abstract: West Nile virus (WNV) is an important emerging zoonotic arbovirus giving rise to clinical syndromes of varying severity in humans and horses. Culex mosquitoes are the main vector. Although WNV has been reported in many countries in the Middle East and ... ...

    Abstract West Nile virus (WNV) is an important emerging zoonotic arbovirus giving rise to clinical syndromes of varying severity in humans and horses. Culex mosquitoes are the main vector. Although WNV has been reported in many countries in the Middle East and Asia, little is known about its prevalence in equine populations in the Arabian Peninsula. We have carried out a serological study on 200 horses to assess WNV infection in the Eastern and Central regions of Saudi Arabia in 2013-2015. Sera were tested for the presence of WNV antibodies in parallel using a commercial enzyme-linked immunosorbent assay (ELISA) kit and microneutralization (MN) tests. In comparison with the MN assay used as "gold standard," we find the ELISA had a sensitivity of 94.7% and specificity of 80.1%. The prevalence of WNV neutralizing antibody ranged from 5 (17.3%) of 29 sera collected in Riyadh up to 15 (55.6%) of 27 sera collected from Al-Qateef. These findings highlight the need to be aware of the possibility of WNV disease in humans and horses presenting with central nervous system disease in the Kingdom of Saudi Arabia.
    MeSH term(s) Animals ; Antibodies, Neutralizing/blood ; Antibodies, Viral/blood ; Culex/virology ; Enzyme-Linked Immunosorbent Assay ; Horse Diseases/epidemiology ; Horse Diseases/immunology ; Horse Diseases/virology ; Horses/virology ; Mosquito Vectors/virology ; Neutralization Tests ; Prevalence ; Saudi Arabia/epidemiology ; Sensitivity and Specificity ; West Nile Fever/epidemiology ; West Nile Fever/immunology ; West Nile Fever/veterinary ; West Nile virus ; Zoonoses/epidemiology ; Zoonoses/virology
    Chemical Substances Antibodies, Neutralizing ; Antibodies, Viral
    Language English
    Publishing date 2018-11-06
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2271118-1
    ISSN 1863-2378 ; 1863-1959
    ISSN (online) 1863-2378
    ISSN 1863-1959
    DOI 10.1111/zph.12532
    Database MEDical Literature Analysis and Retrieval System OnLINE

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