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Avian infectious bronchitis virus in Africa: a review
Khadija Khataby1,2, Siham Fellahi1, Chafiqa Loutfi2
1a Laboratory of Virology, Microbiology and Quality/Ecotoxicology & Biodiversity, Faculty of Sciences and Techniques Mohammedia , University Hassan II of Casablanca , Morocco.
Abstract:
Infectious bronchitis virus (IBV) is worldwide in distribution, highly infectious, and extremely difficult to control because it has extensive genetic diversity, a short generation time, and a high mutation rate. IBV is a Gammacoronavirus, single-stranded, and positive-sense RNA virus. Avian infectious bronchitis is well studied in European countries with identification of a large number of IBV variants, whereas in African countries epidemiological and scientific data are poor and not updated. However, previous studies reported that an IBV variant continues to appear regularly in Africa, as currently described in Morocco. No cross-protection between IBV strains was reported, some being unique to a particular country, others having a more general distribution. This review aims to provide a general overview on IB disease distribution in African countries and an update on the available studies of IBV variants in each country.
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