Publications by authors named "Tony Manuel Joannis"

Article Synopsis
  • - Four Newcastle disease virus isolates were found in healthy guinea fowl and Muscovy ducks, highlighting their potential role in spreading the virus among poultry.
  • - All isolates contained a virulence-related cleavage motif, indicating they are classified as virulent strains from sub-lineage 5 g, previously seen in chickens in Nigeria.
  • - This study marks the first report of virulent sub-lineage 5 g Newcastle disease virus in asymptomatic birds in Nigeria, and the high genetic similarity among viruses suggests connections with neighboring countries, indicating possible cross-border disease transmission through live poultry trade.
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Newcastle disease (ND), caused by Avian Paramyxovirus Type 1, is a highly contagious and devastating viral disease of poultry of worldwide distribution with an enormous economic impact. Although ND is reported to be endemic in Nigeria, little information exists on the molecular epidemiology and the lineage distribution of the Newcastle disease viruses (NDVs) in the country, especially in the live bird markets (LBMs). Recent studies reported the identification of three unique sub-lineages.

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Highly pathogenic avian influenza (AI) is an infectious disease of agroeconomic and public health importance. The outbreak that occurred in Nigeria (2006-2008) was devastating to the poultry industry and raised public health concerns. In the course of its control, rapid laboratory confirmation of suspected cases in poultry was essential for prompt mobilization of control logistics for depopulation and decontamination of affected premises.

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In mid-January 2006 an outbreak of avian influenza in domestic birds was recorded in Kaduna State, Nigeria. The virus responsible for the outbreak was characterized as a highly pathogenic avian influenza H5N1 (A/chicken/Nigeria/641/06), belonging to the Qinghai lineage. The index case occurred on a farm containing mixed avian species including free-range birds.

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