sentences:  Another advantage of using PCR to detect and study microbes is that the DNA sequences of newly discovered infectious microbes or strains can be compared to those already listed in databases, which in turn helps to increase understanding of which organism is causing the infectious disease and thus what possible methods of treatment could be used.This technique is the current standard for detecting viral infections such as AIDS and hepatitis.Once an infection has been diagnosed and identified, suitable treatment options must be assessed by the physician and consulting medical microbiologists.