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猖獗一时的SA R S已然遁形,猪链球菌刚成瓮中之鳖,桀骜凶险的禽流感却又卷土重来。严峻的现实昭示着这样的道理——可恶的传染病没有绝迹,我们对它的认识可能才刚刚开始。传染病侵害人类带来灾难是问题的结果,究其原因,却是千头万绪。那么,究竟什么是传染病?传染病的基本特点又
Rampant SA R S has now escaped, Streptococcus suis just into the urn in the middle of the catastrophic bird flu has come back. The grim reality shows the truth that abhorrent infectious diseases are not extinct and our understanding of it may have just begun. It is the result of the problem that infectious diseases bring harm to human beings. The reason for this is a multitude of things. So, what exactly is an infectious disease? The basic characteristics of infectious diseases in turn