Though for most organisms the sudden appearance of new resistance is rare, this is not the case for all pathogens.

尽管对于大多数生物而言，突然出现新耐药性的情况很罕见，但也不是说所有病原体都如此。

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It results in a higher efficacy against a broader spectrum of pathogens and is known to prevent micro-organisms from developing resistance to the antibiotic substance.

从而针对更广谱的病原体产生更强疗效，而且，也能防止微生物产生对抗生素的耐药性。

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All organisms display some degree of general resistance.

一切有机体都有某种程度的一般抗性。

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Symptoms may appear within hours or days, depending on a series of factors, including the number of organisms ingested, the person's state of health and their natural resistance to the bug.

BBC: E.coli infects nine children