FLOCK-BASED SURVEILLANCE FOR LOW PATHOGENIC AVIAN INFLUENZA VIRUS IN COMMERCIAL BREEDERS AND LAYERS, SOUTHWEST NIGERIA

African Journal of Infectious Diseases (AJID)

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Title FLOCK-BASED SURVEILLANCE FOR LOW PATHOGENIC AVIAN INFLUENZA VIRUS IN COMMERCIAL BREEDERS AND LAYERS, SOUTHWEST NIGERIA
 
Creator Oluwayelu, Daniel Oladimeji
Omolanwa, Ayoyimika
Adebiyi, Adebowale Idris
Aiki-Raji, Comfort Oluladun
 
Subject Traditional Medicine, Medicinal Plants
Background: Flock surveillance systems for avian influenza (AI) virus play a critical role in countries where vaccination is not practiced so as to establish the epidemiological characteristics of AI needed for the development of prevention and control st
 
Description Background: Flock surveillance systems for avian influenza (AI) virus play a critical role in countries where vaccination is not
practiced so as to establish the epidemiological characteristics of AI needed for the development of prevention and control strategies
in such countries.
Materials and Methods: As part of routine AI monitoring in southwest Nigeria, a competitive ELISA was used for detecting
influenza A virus antibodies in the sera of 461 commercial breeder and layer birds obtained from different flocks in Oyo State,
Nigeria while haemagglutination inhibiting antibodies against low pathogenic AI viruses (LPAIVs) were detected using H5N2,
H7N7 and H9N2 subtype-specific antigens. Suspensions prepared from cloacal swabs were tested for AI virus RNA using reverse
transcriptase-polymerase chain reaction.
Results: Results showed that influenza A virus antibody prevalence was 12.8% and 9.3% for breeders and layers, respectively while
HI assay revealed 22.0%, 2.0% and 78.0% prevalence of LPAIV H5N2, H7N7 and H9N2 antibodies respectively. All cloacal swab
suspensions were negative for AIV RNA.
Conclusion: Since LPAI infections result in decreased or complete cessation of egg production in breeder and layer birds, increased
infection severity due to co-infection with other poultry viruses have occasionally been transmitted to humans, the detection of
LPAIV H5N2, H7N7 and H9N2 antibodies in these birds is of both economic and public health significance. These findings
underscore the need for continuous flock monitoring as part of early warning measure to facilitate rapid detection and sustainable
control of AI in Nigerian poultry.
 
Publisher African Traditional Medicine Supporters Initiative (ATHMSI), 7, Road 1, Otunmaiye Square
 
Contributor
 
Date 2016-11-24
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://journals.sfu.ca/africanem/index.php/AJID/article/view/4538
10.21010/ajid.v11i1.5
 
Source African Journal of Infectious Diseases (AJID); Vol 11, No 1 (2017); 44-49
2505-0419
2006-0165
 
Language eng
 
Relation http://journals.sfu.ca/africanem/index.php/AJID/article/view/4538/pdf
 
Coverage Africa


 
Rights Copyright (c) 2016 African Journal of Infectious Diseases (AJID)
 

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