France - LP H5N8 bird flu cases detected in the Landes - Is the H5N8 virus evolving?

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Avian influenza: low-pathogenic cases detected in the Landes

A LA UNE MONT-DE-MARSAN Published on 21/12/2016 at 5:12 pm by Yoann Boffo.

Scientists are wondering about the appearance of two low pathogenic H5N8 outbreaks in the department. The virus was hitherto extremely virulent

The veterinary analyzes confirmed Tuesday evening the presence of H5N8 in two duck farms in Miramont-Sensacq and Eugenie-les-Bains.

Surprise, the virus detected is considered to be low pathogenic. H5N8 was hitherto extremely virulent. The same phenomenon has recently been observed in farms in Gers.

"We did not expect to find less aggressive cases," explains Christophe Debove, departmental director of social cohesion and protection of populations. "We are still at the hypothesis stage, but this could mean an early change in the virus. "

The 2600 animals of these two farms will be slaughtered but, unlike those of highly pathogenic outbreaks, they will be sent to the slaughterhouse to be marketed. Only the remains, the feathers for example, will be destroyed.

There are currently six suspect farms being analyzed in the department. In addition to the two low pathogenic foci confirmed on Tuesday evening, the analyzes helped to remove concerns about a suspected case. In total, five homes are confirmed in the department.

Http://www.sudouest.fr/2016/12/21/grippe-aviaire-des-cas-faiblement-pathogenes-detectes-dans-les-landes-3046715-3452.php

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Avian influenza: is the H5N8 virus evolving?

A LA UNE MONT-DE-MARSAN Published on 22/12/2016 at 8h56 by Yoann Boffo.

The analyzes confirmed the presence of the avian virus in two new farms in the Landes. Surprise, in both cases, is considered low pathogenic. Scientists are wondering.

Since the beginning of the avian crisis, the terms "H5N8" and "highly pathogenic" seemed inseparable. And yet. On Tuesday night, laboratory tests confirmed the presence of the virus in two new fatty duck farms in Miramont-Sensacq and Eugenie-les-Bains. But in a less aggressive form than those detected until then.

"We did not expect to find a case of low pathogenic H5N8," explains Christophe Debove, departmental director of social cohesion and protection of populations. Researchers are working on these cases. The hypothesis of an early onset of the disease can not be ruled out. The same phenomenon has been observed in recent days in several Gersois farms.

Given the low pathogenicity of the animals concerned (a total of 2,800), the authorities decided not to slaughter them on the spot. They were to be driven on Wednesday night to a slaughterhouse and then to be marketed. As with health corridors, every precaution is taken to avoid transmission of the virus on the way. Slaughter residues, such as feathers, will be destroyed to avoid contamination.

Http://www.sudouest.fr/2016/12/22/grippe-aviaire-le-virus-h5n8-est-il-en-train-d-evoluer-3049041-3452.php

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Low pathogenic avian influenza (poultry), France

Information received on 23/12/2016 from Dr Loic Evain, Directeur G?n?ral adjoint, CVO, Direction g?n?rale de l'alimentation, Minist?re de l'Agriculture, de l'Agroalimentaire et de la For?t, Paris, France

Summary Report type Immediate notification Date of start of the event 18/12/2016 Date of confirmation of the event 20/12/2016 Report date 23/12/2016 Date submitted to OIE 23/12/2016 Reason for notification First occurrence of a listed disease in the country Causal agent Low pathogenic avian influenza virus Serotype H5N8 Nature of diagnosis Laboratory (advanced) This event pertains to a defined zone within the country

New outbreaks (1)

Outbreak 1 (1) MIRAMONT SENSACQ, MIRAMONT SENSACQ, LANDES Date of start of the outbreak 18/12/2016 Outbreak status Resolved (21/12/2016) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Destroyed Slaughtered Birds 1700 0 1700 Affected population Samples taken in a ducks farm, within the framework of the zone analytical surveillance.

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Destroyed Slaughtered Birds 1700 ** 0 1700 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Birds ** ** ** ** *Removed from the susceptible population through death, destruction and/or slaughter **Not calculated because of missing information

Epidemiology Source of the outbreak(s) or origin of infection Unknown or inconclusive Epidemiological comments A one-kilometer regulated zone was implemented around the outbreak.

Control measures Measures applied Screening Disinfection / Disinfestation Traceability Vaccination permitted (if a vaccine exists) No treatment of affected animals Measures to be applied No other measures

Diagnostic test results Laboratory name and type Species Test Test date Result Reference National Laboratory, Ploufragan (National laboratory) Birds nucleotide sequencing 20/12/2016 Positive Reference National Laboratory, Ploufragan (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 20/12/2016 Positive

Future Reporting The event is continuing. Weekly follow-up reports will be submitted.

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http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=22021

[bertrand789]

concernant la France depuis plus d'un an on va, de surprise en surprise, si quelques cas sont suite ? une mortalit?, d?s que l'on regarde, par obligation, un peu, on trouve d'autres choses, c'est afligeant ...