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Italian Field Survey Reveals a High Diffusion of Avian Metapneumovirus Subtype B in Layers and Weaknesses in the Vaccination Strategy Applied

Published on Dec 1, 2012in Avian Diseases1.31
· DOI :10.1637/10202-041312-Reg.1
Mattia Cecchinato12
Estimated H-index: 12
(UNIPD: University of Padua),
Caterina Lupini8
Estimated H-index: 8
(UNIBO: University of Bologna)
+ 4 AuthorsE. Catelli12
Estimated H-index: 12
(UNIBO: University of Bologna)
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Abstract
SUMMARY. The current information on the prevalence of avian metapneumovirus (aMPV) infection in layers is fragmentary and its true impact on egg production often remains unknown or unclear. In order to draw an epidemiologic picture of aMPV presence in layer flocks in Italy, a survey was performed on 19 flocks of pullets and layers based on longitudinal studies or sporadic samplings. aMPV was detected by reverse transcription (RT)-PCR, and blood samples were collected for serology by aMPV ELISA. Occurrences of respiratory signs and a drop in egg production were recorded. Possible involvement of infectious bronchitis (IB) and egg drop syndrome (EDS) viruses that could have caused loss of egg production we ruled out for IB virus by RT-PCR, and EDS virus was ruled out by hemagglutination-inhibition (HI). Only subtype B of aMPV was found in both pullet and layer farms. Surveys of pullets showed that most groups became infected prior to the onset of lay without showing clear respiratory signs. At the point of l...
  • References (29)
  • Citations (12)
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References29
Newest
#1Caterina Lupini (UNIBO: University of Bologna)H-Index: 8
#2Mattia Cecchinato (UNIPD: University of Padua)H-Index: 12
Last.E. Catelli (UNIBO: University of Bologna)H-Index: 12
view all 5 authors...
#1Jorge Luis Chacón (USP: University of São Paulo)H-Index: 10
#2Matheus Y. Mizuma (USP: University of São Paulo)H-Index: 2
Last.Antonio José Piantino Ferreira (USP: University of São Paulo)H-Index: 16
view all 8 authors...
#1E. Catelli (UNIBO: University of Bologna)H-Index: 12
#2C. Lupini (UNIBO: University of Bologna)H-Index: 3
Last.C. J. Naylor (University of Liverpool)H-Index: 17
view all 6 authors...
#1Saad Gharaibeh (JUST: Jordan University of Science and Technology)H-Index: 11
#2G. R. Algharaibeh (JUST: Jordan University of Science and Technology)H-Index: 1
#1E. Catelli (UNIBO: University of Bologna)H-Index: 12
#2Cecchinato Mattia (UNIBO: University of Bologna)H-Index: 6
Last.C. J. Naylor (University of Liverpool)H-Index: 17
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Cited By12
Newest
#1Claudia Maria Tucciarone (UNIPD: University of Padua)H-Index: 5
#2Giovanni Franzo (UNIPD: University of Padua)H-Index: 10
Last.Mattia Cecchinato (UNIPD: University of Padua)H-Index: 12
view all 10 authors...
#1Giovanni Franzo (UNIPD: University of Padua)H-Index: 10
#2C. J. Naylor (University of Liverpool)H-Index: 17
Last.Mattia Cecchinato (UNIPD: University of Padua)H-Index: 12
view all 8 authors...
#1Mattia Cecchinato (UNIPD: University of Padua)H-Index: 12
#2E. Catelli (UNIBO: University of Bologna)H-Index: 12
Last.C. J. Naylor (University of Liverpool)H-Index: 17
view all 6 authors...
#1Abdel-Azeem Sayed Abdel-Azeem (FU: Fayoum University)H-Index: 1
#2Giovanni Franzo (UNIPD: University of Padua)H-Index: 10
Last.Mattia Cecchinato (UNIPD: University of Padua)H-Index: 12
view all 8 authors...
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