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==Resistance==
==Resistance==
Like all anti-infective agents resistance is starting to develop as a very serious problem within this set of drugs. This has been because the parasites experience high selection pressure, with the vast majority of the parasite population coming in contact with
Like all anti-infective agents resistance is starting to develop as a very serious problem within this set of drugs. This has been because the parasites experience high selection pressure, with the vast majority of the parasite population coming in contact with the toxicant. This leads to a higher prevelance of the resistant gene amongst the subsequent surviving generations.
It must be remembered that most reports of resistance aren't in fact this but are a failure of treatment. This can be because of a poor choice of product, poor application or because of an overwhelming environmental challenge.