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　　US - Three separate strains of influenza A virus (IAV) have been detected in animal and environmental samples taken from six swine farms in southern Minnesota and northern Iowa with suspected flu outbreaks.According to the study in PLoS One, US researchers took oral fluid, pen railing, and indoor air samples from farms that were identified by area veterinarians as likely hit by flu.Five of the outbreaks were confirmed to be caused by IAV. Of those, 48 per cent (47/98) of oral fluid, 38 per cent (32/84) of pen railing, and 43 per cent (35/82) of indoor air samples tested positive for influenza A by polymerase chain reaction.

　　從明尼蘇達(dá)州南部和愛荷華州北部的六個(gè)豬場(chǎng)提取的動(dòng)物樣品和環(huán)境樣品中檢測(cè)出三種孤立的甲型流感病毒(IAV)菌株，研究人員懷疑那邊有流感爆發(fā)。根據(jù)公共科學(xué)圖書館期刊(PLoS One)的研究，由于被確診區(qū)域的農(nóng)場(chǎng)獸醫(yī)約摸感染流感，美國(guó)研究者從農(nóng)場(chǎng)提取唾液、豬圈及室內(nèi)空氣樣本。有五個(gè)人被確診感染甲型流感病毒(IAV)，其中有48%的唾液樣本，38%的豬圈樣本和43%的室內(nèi)空氣樣本通過聚合酶鏈反應(yīng)檢測(cè)出含有甲型流感病毒。