研究課題
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.
翌年度、交付申請を辞退するため、記入しない。
すべて 2017 2016 その他
すべて 国際共同研究 (2件) 雑誌論文 (2件) (うち国際共著 2件、 査読あり 2件、 謝辞記載あり 1件) 学会発表 (1件)
Transbound Emerg Dis.
巻: 印刷中 ページ: 印刷中
10.1111/tbed.12605.
Vet Microbiol.
巻: 192 ページ: 194-203
10.1016/j.vetmic.2016.07.016.
