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Influenza aviaire H5N8 en Corée du Sud

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VIRUSES 16/03/21 Multiple Reassortants of H5N8 Clade 2.3.4.4b Highly Pathogenic Avian Influenza Viruses Detected in South Korea during the Winter of 2020–2021. During October 2020–January 2021, we isolated a total of 67 highly pathogenic avian influenza (HPAI) H5N8 viruses from wild birds and outbreaks in poultry in South Korea.

VIRUSES 16/03/21 Multiple Reassortants of H5N8 Clade 2.3.4.4b Highly Pathogenic Avian Influenza Viruses Detected in South Korea during the Winter of 2020–2021

We sequenced the isolates and performed phylogenetic analysis of complete genome sequences to determine the origin, evolution, and spread patterns of these viruses. Phylogenetic analysis of the hemagglutinin (HA) gene showed that all the isolates belong to H5 clade 2.3.4.4 subgroup B (2.3.4.4b) and form two distinct genetic clusters, G1 and G2. The cluster G1 was closely related to the 2.3.4.4b H5N8 HPAI viruses detected in Europe in early 2020, while the cluster G2 had a close genetic relationship with the 2.3.4.4b H5N8 viruses that circulated in Europe in late 2020. A total of seven distinct genotypes were identified, including five novel reassortants carrying internal genes of low pathogenic avian influenza viruses. VIRUSES 10/02/21 Spatiotemporal Dynamics of Highly Pathogenic Avian Influenza Subtype H5N8 in Poultry Farms, South Korea. Highly pathogenic avian influenza (HPAI), a zoonotic disease, is a major threat to humans and poultry health worldwide.

VIRUSES 10/02/21 Spatiotemporal Dynamics of Highly Pathogenic Avian Influenza Subtype H5N8 in Poultry Farms, South Korea

In January 2014, HPAI virus subtype H5N8 first infected poultry farms in South Korea, and 393 outbreaks, overall, were reported with enormous economic damage in the poultry industry. We analyzed the spatiotemporal distribution of HPAI H5N8 outbreaks in poultry farms using the global and local spatiotemporal interaction analyses in the first (January to July 2014) and second (September 2014 to June 2015) outbreak waves. The space–time K-function analyses revealed significant interactions within three days and in an over-40 km space–time window between the two study periods. The excess risk attributable value (D0) was maintained despite the distance in the case of HPAI H5N8 in South Korea. Eleven spatiotemporal clusters were identified, and the results showed that the HPAI introduction was from the southwestern region, and spread to the middle region, in South Korea.

J Vet Sci. 2016 Sep; 17(3): 299–306. Molecular characterization of highly pathogenic avian influenza H5N8 viruses isolated from Baikal teals found dead during a 2014 outbreak in Korea. Highly pathogenic avian influenza (HPAI) viruses cause economic losses and pose a threat to public health [15].

J Vet Sci. 2016 Sep; 17(3): 299–306. Molecular characterization of highly pathogenic avian influenza H5N8 viruses isolated from Baikal teals found dead during a 2014 outbreak in Korea

Avian influenza viruses (AIV) have segmented genomes, and antigenic drift and shift are important mechanisms for producing rapid diversity [16]. H5N1 is the representative subtype of HPAI in Asia and has evolved into over 32 clades distinguished by their hemagglutinin (HA) genes [13]. In Korea, there have been four outbreaks of H5N1 HPAI [6]. The A/chicken/Korea/Es/2003 (H5N1) caused the first outbreak in 2003 and 2004. This virus clustered with the A/Duck/China/E319-2/03 (H5N1), which is designated as clade 2.5.

VIRUSES 04/12/20 Highly Pathogenic Avian Influenza Clade 2.3.4.4b Subtype H5N8 Virus Isolated from Mandarin Duck in South Korea, 2020. MDPI and ACS Style Jeong, S.; Lee, D.

VIRUSES 04/12/20 Highly Pathogenic Avian Influenza Clade 2.3.4.4b Subtype H5N8 Virus Isolated from Mandarin Duck in South Korea, 2020

-H.; Kwon, J. -H.; Kim, Y. -J.; Lee, S. -H.; Cho, A.Y.; Kim, T. AMA Style. OSONG PUBLIC HEALTH AND RESEARCH PERSPECTIVES - APRIL 2015 - H5N8 Highly Pathogenic Avian Influenza in the Republic of Korea: Epidemiology During the First Wave, from January Through July 2014. INFECTION, GENETICS AND EVOLUTION - 2015 - Wild waterfowl migration and domestic duck density shape the epidemiology of highly pathogenic H5N8 influenza in the Republic of Korea. MEDECINE DES VOYAGES 26/09/14 Grippe aviaire hautement pathogène A(H5N8) chez des canards en Corée du Sud. Grippe aviaire hautement pathogène A(H5N8) chez des canards en Corée du Sud En Corée du Sud, le Ministry for Food, Agriculture, Forestry & Fisheries a notifié le 25 septembre 2014 à l'Organisation mondiale de la santé animale la survenue le 24 septembre 2014 d'un foyer de grippe aviaire hautement pathogène A(H5N8) dans un élevage de canards à Yeongam-gun, province de Jeollanam-Do.

MEDECINE DES VOYAGES 26/09/14 Grippe aviaire hautement pathogène A(H5N8) chez des canards en Corée du Sud

Sur les 21000 canards, 1200 sont morts et les autres ont été abattus. Le diagnostic a été confirmé par l'Agence de quarantaine phytosanitaire et vétérinaire (Laboratoire national). Source : Organisation mondiale de la santé animale (OIE). Lien : En savoir plus sur : Grippe aviaire. PLEINCHAMP 27/01/14 Epidémie de grippe aviaire H5N8 en Corée du Sud.

27/01/14 Actualités générales La Corée du Sud a imposé un blocus de douze heures sur les élevages de volailles dans trois provinces du pays, afin de freiner la contagion d'une épidémie de grippe aviaire, qui a déjà entraîné l'abattage de centaines de milliers d'animaux.

PLEINCHAMP 27/01/14 Epidémie de grippe aviaire H5N8 en Corée du Sud

Depuis que l'épidémie a été détectée, le 16 janvier, dans une ferme d'élevage de canards à Gochang, à 300 km au sud-ouest de Séoul,quelque 640.000 volailles ont été abattues. La souche H5N8 a depuis été identifiée dans 17 autres élevages et 810.000 animaux vont être tués au cours des prochains jours. Les autorités ont interdit tout déplacement pendant douze heures aux personnes travaillant dans les élevages de volailles, y compris les vétérinaires, dans les provinces de Gyeonggi (près de Séoul), du Chungcheong du Sud et du Chungcheong du Nord (Centre).

Le blocus est entré en vigueur lundi au petit matin. Source : AFP. Veterinary Microbiology Available online 14 August 2014 Highly pathogenic avian influenza virus (H5N8) in domestic poultry and its relationship with migratory birds in South Korea during 2014. Animal and Plant Quarantine Agency, 175 Anyangro, Anyangsi, Gyeonggido 430-757, Republic of Korea Received 3 June 2014, Revised 3 August 2014, Accepted 4 August 2014, Available online 14 August 2014 Choose an option to locate/access this article: Check if you have access through your login credentials or your institution Check access doi:10.1016/j.vetmic.2014.08.002 Get rights and content Highlights.

Veterinary Microbiology Available online 14 August 2014 Highly pathogenic avian influenza virus (H5N8) in domestic poultry and its relationship with migratory birds in South Korea during 2014.

CDC EID - Volume 21, Number 2—February 2015 Au sommaire: Novel Reassortant Influenza A(H5N8) Viruses among Inoculated Domestic and Wild Ducks, South Korea, 2014. CDC EID - Volume 20, Number 9—September 2014. Au sommaire notamment: Highly Pathogenic Avian Influenza A(H5N8) Virus from Waterfowl, South Korea, 2014. Suggested citation for this article To the Editor: To date, 18 hemagglutinin (HA) subtypes and 11 neuraminidase (NA) subtypes have been identified in influenza A viruses (1–4).

CDC EID - Volume 20, Number 9—September 2014. Au sommaire notamment: Highly Pathogenic Avian Influenza A(H5N8) Virus from Waterfowl, South Korea, 2014

Influenza A viruses containing HA subtypes 1–16 circulate in aquatic birds (1,2), whereas those harboring HA subtypes 17 and 18 are found in bats (3,4). On January 18, 2014, the government of South Korea reported an outbreak of highly pathogenic avian influenza A(H5N8) virus in breeding ducks in the southern part of Jeollabuk-Do Province (5). More than 12 million poultry have since been culled, but the spread of the virus continues in duck and chicken farms. We report the genetic characterization of this virus. On February 15, 2014, a total of 200 fecal samples were collected from waterfowl in the Pungse River in Chungnam Province, which is geographically close to Jeollabuk-Do Province. We further analyzed the amino acid sequences of the virus isolate (online Technical Appendix Table 1). Acknowledgments References. CDC EID – MARS 2016 – Au sommaire notamment: Highly Pathogenic Avian Influenza A(H5N8) Viruses Reintroduced into South Korea by Migratory Waterfowl, 2014–2015.