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A Case of Infectious Laryngotracheitis in an Organic Broiler Chicken Farm in Greece

Infectious laryngotracheitis is an economically significant viral disease of chickens, that mainly affects the upper respiratory tract, and is present worldwide. This case reports the first outbreak of infectious laryngotracheitis in a four-week-old organic broiler farm and surrounding flocks in Gre...

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Autores principales: Tsiouris, Vasileios, Mavromati, Natalia, Kiskinis, Konstantinos, Mantzios, Tilemachos, Homonnay, Zalan G., Mato, Tamas, Albert, Mihaly, Kiss, Istvan, Georgopoulou, Ioanna
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8073223/
https://www.ncbi.nlm.nih.gov/pubmed/33923535
http://dx.doi.org/10.3390/vetsci8040064
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author Tsiouris, Vasileios
Mavromati, Natalia
Kiskinis, Konstantinos
Mantzios, Tilemachos
Homonnay, Zalan G.
Mato, Tamas
Albert, Mihaly
Kiss, Istvan
Georgopoulou, Ioanna
author_facet Tsiouris, Vasileios
Mavromati, Natalia
Kiskinis, Konstantinos
Mantzios, Tilemachos
Homonnay, Zalan G.
Mato, Tamas
Albert, Mihaly
Kiss, Istvan
Georgopoulou, Ioanna
author_sort Tsiouris, Vasileios
collection PubMed
description Infectious laryngotracheitis is an economically significant viral disease of chickens, that mainly affects the upper respiratory tract, and is present worldwide. This case reports the first outbreak of infectious laryngotracheitis in a four-week-old organic broiler farm and surrounding flocks in Greece, with typical clinical symptoms and lesions, allegedly provoked by a wild strain of infectious laryngotracheitis virus. Our findings contradict the general perception indicating that the disease appears mainly in older birds and that vaccine strains are the primary cause of infectious laryngotracheitis outbreaks in most continents. A recombinant vectored vaccine was administered, supplementary to biosecurity measures, containing the viral spread. The responsible strain was potentially circulating in the area; therefore, an industry-wide holistic approach was applied, including the vaccination of neighboring broilers and breeders with the same vaccine, the rapid molecular diagnosis of the disease, and strict biosecurity protocols. The results of this holistic effort were effective because, following the application of vaccine and management protocols, manifestations of the disease in regional flocks dropped significantly, and there was no recurrence to date. These findings suggest that vaccination protocols should be modified, especially for organic broilers, to include vaccination against infectious laryngotracheitis.
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spelling pubmed-80732232021-04-27 A Case of Infectious Laryngotracheitis in an Organic Broiler Chicken Farm in Greece Tsiouris, Vasileios Mavromati, Natalia Kiskinis, Konstantinos Mantzios, Tilemachos Homonnay, Zalan G. Mato, Tamas Albert, Mihaly Kiss, Istvan Georgopoulou, Ioanna Vet Sci Case Report Infectious laryngotracheitis is an economically significant viral disease of chickens, that mainly affects the upper respiratory tract, and is present worldwide. This case reports the first outbreak of infectious laryngotracheitis in a four-week-old organic broiler farm and surrounding flocks in Greece, with typical clinical symptoms and lesions, allegedly provoked by a wild strain of infectious laryngotracheitis virus. Our findings contradict the general perception indicating that the disease appears mainly in older birds and that vaccine strains are the primary cause of infectious laryngotracheitis outbreaks in most continents. A recombinant vectored vaccine was administered, supplementary to biosecurity measures, containing the viral spread. The responsible strain was potentially circulating in the area; therefore, an industry-wide holistic approach was applied, including the vaccination of neighboring broilers and breeders with the same vaccine, the rapid molecular diagnosis of the disease, and strict biosecurity protocols. The results of this holistic effort were effective because, following the application of vaccine and management protocols, manifestations of the disease in regional flocks dropped significantly, and there was no recurrence to date. These findings suggest that vaccination protocols should be modified, especially for organic broilers, to include vaccination against infectious laryngotracheitis. MDPI 2021-04-16 /pmc/articles/PMC8073223/ /pubmed/33923535 http://dx.doi.org/10.3390/vetsci8040064 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Case Report
Tsiouris, Vasileios
Mavromati, Natalia
Kiskinis, Konstantinos
Mantzios, Tilemachos
Homonnay, Zalan G.
Mato, Tamas
Albert, Mihaly
Kiss, Istvan
Georgopoulou, Ioanna
A Case of Infectious Laryngotracheitis in an Organic Broiler Chicken Farm in Greece
title A Case of Infectious Laryngotracheitis in an Organic Broiler Chicken Farm in Greece
title_full A Case of Infectious Laryngotracheitis in an Organic Broiler Chicken Farm in Greece
title_fullStr A Case of Infectious Laryngotracheitis in an Organic Broiler Chicken Farm in Greece
title_full_unstemmed A Case of Infectious Laryngotracheitis in an Organic Broiler Chicken Farm in Greece
title_short A Case of Infectious Laryngotracheitis in an Organic Broiler Chicken Farm in Greece
title_sort case of infectious laryngotracheitis in an organic broiler chicken farm in greece
topic Case Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8073223/
https://www.ncbi.nlm.nih.gov/pubmed/33923535
http://dx.doi.org/10.3390/vetsci8040064
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