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  • Title: The status of Rift Valley fever in animals in Saudi Arabia: a mini review.
    Author: Al-Afaleq AI, Hussein MF.
    Journal: Vector Borne Zoonotic Dis; 2011 Dec; 11(12):1513-20. PubMed ID: 21923257.
    Abstract:
    In August-September 2000, an overwhelming outbreak of Rift Valley fever (RVF) struck the southwestern part of Saudi Arabia and adjoining Yemeni territories. During the outbreak, which was the first ever to be recorded outside Africa, around 40,000 animals, mostly sheep and goats, died or aborted and 883 cases, with 124 deaths, were recorded among humans in Saudi Arabia. An additional 1328 human cases, with 166 deaths, were concurrently recorded in northwestern Yemen. Vector studies in Saudi Arabia established Aedes vexans arabiensis and Culex (culex) triteniorynchus as the biological vectors of RVF virus in the region. Both of these species and several others, which could be potential vectors of the virus, occur throughout the Kingdom. Rigorous control measures were implemented, which succeeded in curtailing the infection and preventing its spread to other parts of the country. However, the virus persisted in a cryptic form in the original area of the epizootic, resulting in intermittent diagnosis of few cases throughout the past 10 years. To date, however, no evidence was found of virus activity outside that area. This review provides, from a veterinary perspective, a brief account of the events surrounding the epizootic and its present status in Saudi Arabia and emphasizes the need for vigilance, preparedness, and regular monitoring of the disease by serosurveillance methods.
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