REP-PCR, ERIC PCR, ITS, spa typing

and genera to unique to each organism. Some of these sequences are strain- or species-specific and can be used for epidemiological analysis. DNA analysis is highly reproducible and, depending on the target sequences, can discriminate between even closely related organisms. Most (but not all) molecular methods offer definitive results in the form of DNA sequences or gel band and peak patterns that can be interpreted objectively, which is less difficult than subjective determinations that often require experienced judgment. With commercial systems, test performance has become relatively simple for some molecular epidemiology tests, whereas others require a higher level of laboratory expertise.

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