11 Feb., Ôita prefecture announced http://www.pref.oita.jp/uploaded/attachment/126990.pdf

H5 subtype was detected from mandarin duck by genetic test

rice field, Yabakei town, Nakatsu city, Ôita prefecture

10 Feb.,
an inhabitant found unhealthy mandarin duck at 16:30 PM
simple test was negative

11 Feb.,
Ôita prefectural Institute of Public Health and Environmental Science detected H5 subtype

Ôita prefecture inquired 12 farms within 10 km radius from the spot by telephone survey
12 farms had no problem, these farms have a total of 88000 chickens

surveillances at Nanase river
oita press

asahi com http://www.excite-webtl.jp/world/english/web/?wb_url=http%3A%2F%2Fwww.asahi.com%2Fnational%2Fup date%2F0211%2FSEB201102110007.html&wb_lp=JAEN&wb_d is=2
oita press http://www.excite-webtl.jp/world/eng...=JAEN&wb_dis=2