Risk Factors for the Introduction of Avian Influenza Virus into Commercial Layer Chicken Farms During the Outbreaks Caused by a Low-Pathogenic H5N2 Virus in Japan in 2005.

Risk Factors for the Introduction of Avian Influenza Virus into Commercial Layer Chicken Farms During the Outbreaks Caused by a Low-Pathogenic H5N2 Virus in Japan in 2005. Research Abstract Details 

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Risk Factors for the Introduction of Avian Influenza Virus into Commercial Layer Chicken Farms During the Outbreaks Caused by a Low-Pathogenic H5N2 Virus in Japan in 2005. Abstract Text:

A Nishiguchi,S Kobayashi,T Yamamoto,Y Ouchi,T Sugizaki,T Tsutsui,A Nishiguchi,S Kobayashi,T Yamamoto,Y Ouchi,T Sugizaki,T Tsutsui,A Nishiguchi,S Kobayashi,T Yamamoto,Y Ouchi,T Sugizaki,T Tsutsui,

Avian influenza outbreaks caused by a low-pathogenic H5N2 virus occurred in Japan from June to December 2005. All 41 affected farms housed layer chickens. Therefore, we conducted a case-control study targeting all commercial layer chicken farms within the movement restriction areas in Ibaraki prefecture, where most outbreaks were detected, to investigate the risk factors for the introduction of avian influenza virus (AIV). Four variables were identified as risk factors associated with the introduction of AIV by multivariate logistic regression: 'introduction of end-of-lay chickens ' (odds ratio (OR) = 36.6), 'sharing of farm equipment among farms' (OR = 29.4), 'incomplete hygiene measures of farm visitors on shoes, clothes and hands' (OR = 7.0), and 'direct distance to the nearest case farm' (0-500 m, OR = 8.6; 500-1000 m, OR = 0.8; 1000-1500 m, OR = 20.1; referenced more than 1500 m). We fully believe that strict biosecurity measures should be applied against any incursion points so as not to introduce AIV into more farms.

Risk Factors for the Introduction of Avian Influenza Virus into Commercial Layer Chicken Farms During the Outbreaks Caused by a Low-Pathogenic H5N2 Virus in Japan in 2005. Publishing Authors By Initials

A Nishiguchi,S Kobayashi,T Yamamoto,Y Ouchi,T Sugizaki,T Tsutsui,A Nishiguchi,S Kobayashi,T Yamamoto,Y Ouchi,T Sugizaki,T Tsutsui,A Nishiguchi,S Kobayashi,T Yamamoto,Y Ouchi,T Sugizaki,T Tsutsui,

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Risk Factors for the Introduction of Avian Influenza Virus into Commercial Layer Chicken Farms During the Outbreaks Caused by a Low-Pathogenic H5N2 Virus in Japan in 2005. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Zoonoses and public health

VOLUME: 54

Page Numbers: 337-43

Journal Abbreviation: Zoonoses Public Health

ISSN: 1863-1959

DAY: 26

MONTH: 11

YEAR: 2007

Risk Factors for the Introduction of Avian Influenza Virus into Commercial Layer Chicken Farms During the Outbreaks Caused by a Low-Pathogenic H5N2 Virus in Japan in 2005. Information

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LANGUAGE: eng

NlmUniqueID: 101300786

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AFFILIATION: Epidemiology Team, National Institute of Animal Health, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan.

Country: Germany

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MEDLINETA: Zoonoses Public Health

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