Highly pathogenic H5 avian influenza in 2016 and early 2017 - observations and future perspectives
During 2016–2017 novel strains of highly pathogenic H5 avian influenza virus within the Goose/Guangdong/96 (Gs/GD/96)-lineage (mainly H5N8) caused multiple outbreaks of disease in poultry and wild birds across much of Europe, parts of Asia, the Middle East and West Africa, and have extended for the first time to affect poultry in Eastern and Southern Africa. The virus was reported first in the Tyva Republic in late May 2016 before being detected elsewhere. This was the fourth intercontinental wave of transmission by an H5 virus within this lineage and was by far the most severe in terms of the number of countries affected. Observations from earlier intercontinental outbreaks of Gs/GD/96-lineage H5 HPAI from 2005 onwards may help forecast the probable course of this current panzootic,1 although it also demonstrates that the behaviour of H5 HPAI viruses in this and previous waves has varied. If the reasons for these differences can be determined, (viral, host and environmental factors), it may help improve forecasting and hence preparedness and early detection of viral incursions. In particular, the detection of a novel virus in wild birds on the Tibetan plateau and surrounding areas largely devoid of commercial poultry production, (including northern Mongolia and southern Russian Federation), in May-June of any year is likely to be followed later that year by detection of a similar virus in other distant countries, extending into Europe, South Asia and Africa. Evidence from earlier waves also suggests that the current virus could return to Europe in 2017–2018, although the number of outbreaks is expected to be lower than in 2016–2017. In the current fourth intercontinental wave, the virus has been detected in a range of farm types, intensive and extensive, with a higher proportion in domestic ducks, geese and turkeys, but chickens have also been affected. Secondary spread between poultry farms appears to have occurred in at least six European countries: Hungary, France, Bulgaria, Germany, Poland and the United Kingdom, (APHA, 2017), but many appear to be primary cases not directly related to other cases on poultry farms. At about same time as the H5N8 virus appeared in Europe an H5N6 subtype virus also within the Goose/Guangdong/96-lineage caused a massive outbreak of disease in layer chickens and ducks in the Republic of Korea. This virus has not been detected there since early April 2017. Movement of both viruses has been associated with infection in wild birds and their role in the long distance transmission of these viruses during the autumn migration is now irrefutable.
Main Authors: | , , , , , , , , , , , , |
---|---|
Format: | monograph biblioteca |
Language: | eng |
Published: |
FAO
|
Subjects: | L73 - Maladies des animaux, |
Online Access: | http://agritrop.cirad.fr/585953/ http://agritrop.cirad.fr/585953/1/a-i8068e.pdf |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-cirad-fr-585953 |
---|---|
record_format |
koha |
spelling |
dig-cirad-fr-5859532022-07-04T09:24:17Z http://agritrop.cirad.fr/585953/ http://agritrop.cirad.fr/585953/ Highly pathogenic H5 avian influenza in 2016 and early 2017 - observations and future perspectives. Sims Les, Harder Timm C., Brown Ian H., Gaidet Nicolas, Belot Guillaume, Von Dobschuetz Sophie, Kamata Akiko, Kivaria Fredrick Mathias, Palamara Elisa, Bruni Mirko, Dauphin Gwenaelle, Raizman Eran, Lubroth Juan. 2017. Rome : FAO, 16 p. (Empres Focus On, 11) Researchers Highly pathogenic H5 avian influenza in 2016 and early 2017 - observations and future perspectives Sims, Les Harder, Timm C. Brown, Ian H. Gaidet, Nicolas Belot, Guillaume Von Dobschuetz, Sophie Kamata, Akiko Kivaria, Fredrick Mathias Palamara, Elisa Bruni, Mirko Dauphin, Gwenaelle Raizman, Eran Lubroth, Juan eng 2017 FAO Empres Focus On L73 - Maladies des animaux During 2016–2017 novel strains of highly pathogenic H5 avian influenza virus within the Goose/Guangdong/96 (Gs/GD/96)-lineage (mainly H5N8) caused multiple outbreaks of disease in poultry and wild birds across much of Europe, parts of Asia, the Middle East and West Africa, and have extended for the first time to affect poultry in Eastern and Southern Africa. The virus was reported first in the Tyva Republic in late May 2016 before being detected elsewhere. This was the fourth intercontinental wave of transmission by an H5 virus within this lineage and was by far the most severe in terms of the number of countries affected. Observations from earlier intercontinental outbreaks of Gs/GD/96-lineage H5 HPAI from 2005 onwards may help forecast the probable course of this current panzootic,1 although it also demonstrates that the behaviour of H5 HPAI viruses in this and previous waves has varied. If the reasons for these differences can be determined, (viral, host and environmental factors), it may help improve forecasting and hence preparedness and early detection of viral incursions. In particular, the detection of a novel virus in wild birds on the Tibetan plateau and surrounding areas largely devoid of commercial poultry production, (including northern Mongolia and southern Russian Federation), in May-June of any year is likely to be followed later that year by detection of a similar virus in other distant countries, extending into Europe, South Asia and Africa. Evidence from earlier waves also suggests that the current virus could return to Europe in 2017–2018, although the number of outbreaks is expected to be lower than in 2016–2017. In the current fourth intercontinental wave, the virus has been detected in a range of farm types, intensive and extensive, with a higher proportion in domestic ducks, geese and turkeys, but chickens have also been affected. Secondary spread between poultry farms appears to have occurred in at least six European countries: Hungary, France, Bulgaria, Germany, Poland and the United Kingdom, (APHA, 2017), but many appear to be primary cases not directly related to other cases on poultry farms. At about same time as the H5N8 virus appeared in Europe an H5N6 subtype virus also within the Goose/Guangdong/96-lineage caused a massive outbreak of disease in layer chickens and ducks in the Republic of Korea. This virus has not been detected there since early April 2017. Movement of both viruses has been associated with infection in wild birds and their role in the long distance transmission of these viruses during the autumn migration is now irrefutable. monograph info:eu-repo/semantics/report Report info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/585953/1/a-i8068e.pdf text Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html info:eu-repo/semantics/reference/purl/http://www.fao.org/ag/againfo/programmes/en/empres/home.asp |
institution |
CIRAD FR |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cirad-fr |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Biblioteca del CIRAD Francia |
language |
eng |
topic |
L73 - Maladies des animaux L73 - Maladies des animaux |
spellingShingle |
L73 - Maladies des animaux L73 - Maladies des animaux Sims, Les Harder, Timm C. Brown, Ian H. Gaidet, Nicolas Belot, Guillaume Von Dobschuetz, Sophie Kamata, Akiko Kivaria, Fredrick Mathias Palamara, Elisa Bruni, Mirko Dauphin, Gwenaelle Raizman, Eran Lubroth, Juan Highly pathogenic H5 avian influenza in 2016 and early 2017 - observations and future perspectives |
description |
During 2016–2017 novel strains of highly pathogenic H5 avian influenza virus within the Goose/Guangdong/96 (Gs/GD/96)-lineage (mainly H5N8) caused multiple outbreaks of disease in poultry and wild birds across much of Europe, parts of Asia, the Middle East and West Africa, and have extended for the first time to affect poultry in Eastern and Southern Africa. The virus was reported first in the Tyva Republic in late May 2016 before being detected elsewhere. This was the fourth intercontinental wave of transmission by an H5 virus within this lineage and was by far the most severe in terms of the number of countries affected. Observations from earlier intercontinental outbreaks of Gs/GD/96-lineage H5 HPAI from 2005 onwards may help forecast the probable course of this current panzootic,1 although it also demonstrates that the behaviour of H5 HPAI viruses in this and previous waves has varied. If the reasons for these differences can be determined, (viral, host and environmental factors), it may help improve forecasting and hence preparedness and early detection of viral incursions. In particular, the detection of a novel virus in wild birds on the Tibetan plateau and surrounding areas largely devoid of commercial poultry production, (including northern Mongolia and southern Russian Federation), in May-June of any year is likely to be followed later that year by detection of a similar virus in other distant countries, extending into Europe, South Asia and Africa. Evidence from earlier waves also suggests that the current virus could return to Europe in 2017–2018, although the number of outbreaks is expected to be lower than in 2016–2017. In the current fourth intercontinental wave, the virus has been detected in a range of farm types, intensive and extensive, with a higher proportion in domestic ducks, geese and turkeys, but chickens have also been affected. Secondary spread between poultry farms appears to have occurred in at least six European countries: Hungary, France, Bulgaria, Germany, Poland and the United Kingdom, (APHA, 2017), but many appear to be primary cases not directly related to other cases on poultry farms. At about same time as the H5N8 virus appeared in Europe an H5N6 subtype virus also within the Goose/Guangdong/96-lineage caused a massive outbreak of disease in layer chickens and ducks in the Republic of Korea. This virus has not been detected there since early April 2017. Movement of both viruses has been associated with infection in wild birds and their role in the long distance transmission of these viruses during the autumn migration is now irrefutable. |
format |
monograph |
topic_facet |
L73 - Maladies des animaux |
author |
Sims, Les Harder, Timm C. Brown, Ian H. Gaidet, Nicolas Belot, Guillaume Von Dobschuetz, Sophie Kamata, Akiko Kivaria, Fredrick Mathias Palamara, Elisa Bruni, Mirko Dauphin, Gwenaelle Raizman, Eran Lubroth, Juan |
author_facet |
Sims, Les Harder, Timm C. Brown, Ian H. Gaidet, Nicolas Belot, Guillaume Von Dobschuetz, Sophie Kamata, Akiko Kivaria, Fredrick Mathias Palamara, Elisa Bruni, Mirko Dauphin, Gwenaelle Raizman, Eran Lubroth, Juan |
author_sort |
Sims, Les |
title |
Highly pathogenic H5 avian influenza in 2016 and early 2017 - observations and future perspectives |
title_short |
Highly pathogenic H5 avian influenza in 2016 and early 2017 - observations and future perspectives |
title_full |
Highly pathogenic H5 avian influenza in 2016 and early 2017 - observations and future perspectives |
title_fullStr |
Highly pathogenic H5 avian influenza in 2016 and early 2017 - observations and future perspectives |
title_full_unstemmed |
Highly pathogenic H5 avian influenza in 2016 and early 2017 - observations and future perspectives |
title_sort |
highly pathogenic h5 avian influenza in 2016 and early 2017 - observations and future perspectives |
publisher |
FAO |
url |
http://agritrop.cirad.fr/585953/ http://agritrop.cirad.fr/585953/1/a-i8068e.pdf |
work_keys_str_mv |
AT simsles highlypathogenich5avianinfluenzain2016andearly2017observationsandfutureperspectives AT hardertimmc highlypathogenich5avianinfluenzain2016andearly2017observationsandfutureperspectives AT brownianh highlypathogenich5avianinfluenzain2016andearly2017observationsandfutureperspectives AT gaidetnicolas highlypathogenich5avianinfluenzain2016andearly2017observationsandfutureperspectives AT belotguillaume highlypathogenich5avianinfluenzain2016andearly2017observationsandfutureperspectives AT vondobschuetzsophie highlypathogenich5avianinfluenzain2016andearly2017observationsandfutureperspectives AT kamataakiko highlypathogenich5avianinfluenzain2016andearly2017observationsandfutureperspectives AT kivariafredrickmathias highlypathogenich5avianinfluenzain2016andearly2017observationsandfutureperspectives AT palamaraelisa highlypathogenich5avianinfluenzain2016andearly2017observationsandfutureperspectives AT brunimirko highlypathogenich5avianinfluenzain2016andearly2017observationsandfutureperspectives AT dauphingwenaelle highlypathogenich5avianinfluenzain2016andearly2017observationsandfutureperspectives AT raizmaneran highlypathogenich5avianinfluenzain2016andearly2017observationsandfutureperspectives AT lubrothjuan highlypathogenich5avianinfluenzain2016andearly2017observationsandfutureperspectives |
_version_ |
1758025530228080640 |