| Project/Area Number |
16J06369
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Single-year Grants |
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| Section | 国内 |
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| Research Field |
Veterinary medical science
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| Research Institution | Hokkaido University |
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Principal Investigator |
CHU DUC HUY 北海道大学, (連合)獣医学研究科, 特別研究員(DC2)
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| Project Period (FY) |
2016-04-22 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2016: ¥700,000 (Direct Cost: ¥700,000)
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| Keywords | avian influenza virus / live bird market / risk analysis / transmission |
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| Outline of Annual Research Achievements |
This fiscal year, we focused on the following research to evaluate the current interventions on live bird market (LBM) in order to minimize the risk of avian influenza virus (AIV) transmission to poultry and humans.
The characteristics of LBMs with improved infrastructure were compared with those operating in a routine manner in Vietnam. The study showed that various subtypes of AIVs were isolated during surveillance of LBMs with or without intervention. In addition, H5N6 highly pathogenic avian influenza viruses (HPAIVs) were isolated from apparently healthy ducks, Muscovy ducks and environmental samples in one of the intervention LBMs. And the prevalence of AIVs in intervention LBMs was similar to that in non-intervention LBMs. These results suggest that the interventions currently applied in LBMs in center part of Vietnam are insufficient to control avian influenza.
To identify the factors contributing to AIVs circulation in both types of LBMs, this focused on quantification of bird-, poultry seller- and market-level characteristics that rendered individual birds more likely to be AIV isolation positive at the time of sale. The results demonstrate that after adjusting for clustering at the market- and individual seller-level none of the explanatory variables solicited in the questionnaire were significantly associated with AIV positivity. A relatively small component of the variation in AIV positivity risk was at the individual market-level. It indicates that the emphasis of avian influenza control efforts should be at the seller-level rather than market-level.
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| Research Progress Status |
翌年度、交付申請を辞退するため、記入しない。
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| Strategy for Future Research Activity |
翌年度、交付申請を辞退するため、記入しない。
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