In general, if not already produced by the body of patients with drug-resistant Mycobacterium tuberculosis direct infection, suffering from TB drug resistance is unlikely.

一般来说，如果不是被身体中已经产生耐药结核杆菌的患者直接传染，患上耐药性的结核病的可能性不大。

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The human deaths from H5N1 have so far occurred as a result of direct infection from birds - except in two outbreaks where rare human-to-human transmission appears to have occurred.

至今所有死于禽流感的患者除了两例罕见人与人之间传播的病例外，均为直接从鸟类感染。

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KoRV (koala retrovirus) integrates itself into the animalsâ DNA, and may be passed on genetically as well as through direct infection, experts have found, though they are unsure how it is spread.

尽管还无法确定病毒KoRV（考拉反转录病毒）是怎么传播的，但专家已经发现，这种病毒能够自我整合入动物的DNA，可随着基因遗传给后代，直接接触也会感染。

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The primary risk factor for human infection appears to be direct or indirect exposure to infected live or dead poultry or contaminated environments.

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They then went through them to see how many mentioned MRSA, the drug-resistant form of the infection, as a direct or contributing cause of death.

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The European Centre for Disease Prevention and Control estimated, in 2009, that each year 25, 000 Europeans die as a direct consequence of a multidrug-resistant infection.

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