Porcine reproductive and respiratory syndrome (PRRS) becomes an economically significant disease for the Chineseswine industry.
猪繁殖与呼吸综合征(PRRS)是当前严重危害我国养猪业的重要传染病。
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A Chinese herb called astragalus can boost your immune system and help you fend off infections, from the common cold to swine flu, according companies that sell it.