Freilandhaltung, wo liegen die Risiken?

[Sarcelle]

The Transmissibility of Highly Pathogenic Avian Influenza in Commercial Poultry in Industrialised Countries
Tini Garske1,2*, Paul Clarke1, Azra C. Ghani1

1 Department of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom, 2 Institute for Mathematical Sciences, Imperial College London, London, United Kingdom

Background
With the increased occurrence of outbreaks of H5N1 worldwide there is concern that the virus could enter commercial poultry farms with severe economic consequences.

http://www.plosone.org/article/fetch...l.pone.0000349

[Sarcelle]

a Global situation: HPAI outbreaks in poultry- a synthesis of country reports to the OIEAntonio Petrini, OIE
Summary
A tendency has been recently observed for highly pathogenic avian influenza (HPAI) virus subtype H5N1 to re-emerge in some countries that had already eradicated the disease. The HPAI H5N1 epizootic that started in South-East Asia at the end of 2003 and remained confined
to this region in 2004, spread to other regions and continents in 2005 and 2006. Three new countries, namely Bangladesh, Kuwait and Saudi Arabia, have been affected in 2007.

http://www.fao.org/docs/eims/upload/229338/ah652e.pdf

[Sarcelle]

Highly pathogenic avian influenza risk, biosecurity and smallholder adversity
J Otte, D Pfeiffer*, T Tiensin**, L Price*** and E Silbergeld***
FAO, Via delle terme di Caracalla, 00153 Rome, Italy
joachim.otte@fao.org
* Royal Veterinary College, Hatfield, Herts, AL9 7TA, UK
pfeiffer@rvc.ac.uk
** Utrecht University, Yalelaan 7, 3584 CL Utrecht, NL
t.tiensin@vet.uu.nl
*** Johns Hopkins University Bloomberg School of Public Health, 615 N. Wolfe Street, E6644 Baltimore, MD 21205, USA
lprice@jhsph.edu and esilberg@jhsph.edu
Abstract
There is considerable global concern over the newly emergent H5N1 strain of avian influenza that has affected millions of domestic poultry flocks and resulted in more than 150 deaths in humans. There has been little analysis of the general assumption that smallholder backyard poultry flocks are inherently at higher risk of highly pathogenic avian influenza (HPAI) than confined and commercial scale operations. We utilized data from Thailand, collected in 2004, to test the relative risks of HPAI infection in poultry flocks, by species, type of operation, and geographic location. The results indicate that backyard flocks are at lower risk of HPAI infection compared to commercial scale operations of broiler or layer chickens or quail. These findings are plausible in terms of the opportunities for breach of biosecurity in commercial scale, industrial operations.

Both experimental and observational studies in developed country settings have demonstrated the capacity of microbes to enter and leave these larger operations despite the implementation of standard biosecurity measures. Patterns of infection during 2002 Newcastle disease epidemic in Denmark proved further evidence to question that smallholder backyard flocks are at higher risk of epidemic diseases than commercial operations. These results should be considered by policy makers and public health officials when developing plans to control or prevent HPAI in order to limit avoidable adverse effects on the livelihood of smallholder poultry producers in developing countries.

http://www.cipav.org.co/lrrd/lrrd19/7/otte19102.htm

[Sarcelle]

AI control experiences in Europe, Russia and the Middle EastIan Brown
OIE/FAO/EU Reference Laboratory for AI
VLA-Weybridge, UK

Spread of Asian-lineage H5N1 HPAI to Europe
power point presentation
http://www.oie.int/verone/20%20Marte...09%20Brown.pdf

[Sarcelle]

Outbreaks of HPAI H5N1 virus in Europe during 2005/2006
(An overview and commentary)
Working Document

http://www.defra.gov.uk/animalh/dise...rope300606.pdf

[acer]

Schon gemerkt, diese Webseite heißt Hühner-info, nicht nicht Chicken-info.
Der Titel klang interessant, aber es ist nicht jeder anglophon.

[AnnTye]

Hallo Acer,

in dieser Rubrik dürfen ausdrücklich auch fremdsprachliche Links und Texte gepostet werden. Steht bei der Beschreibung der Rubrik dabei.

Viele Grüsse Antje

[Wontolla]

Aber Kernsätze wie

The results indicate that backyard flocks are at lower risk of HPAI infection compared to commercial scale operations of broiler or layer chickens or quail.

Die Ergebnisse weisen darauf hin, dass für Hinterhofgeflügel ein geringeres HPAI-Infektionsrisiko besteht, verglichen mit der kommerziellen Haltung von Mast- oder Legehühnern oder Wachteln.

bestätigen meine Überzeugung (weil wissen kann ich das ja nicht).