The questionnaires show that over 80% of the subjects had physical contact with swine excretions in the exposed group and that many flu-related syndromes were work related. 問(wèn)卷統計結果發(fā)現，暴露組勞工超過(guò)八成在工作現場(chǎng)接觸到豬體物質(zhì)，重感冒癥狀與現場(chǎng)工作有顯著(zhù)關(guān)系。
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