Abstract

Antibiotic resistance in common bacterial pathogens, such as Staphylococcus aureus, Escherichia coli, and Klebsiella pneumoniae, has significantly limited the therapeutic options available for management of infectious diseases. While the indiscriminant use of broad spectrum antibiotics is a significant contributing factor, a more fundamental problem exists. Diagnostic microbiology test results have historically been available too late to be useful. This is, in part, due to the nature of the test methods and in part due to workflow practices in the laboratory. Thus, patients remain on empiric treatments that are frequently ineffective or unnecessarily too broad spectrum1,2. Microscopy and bacterial cultures are mainstays in the microbiology lab, using techniques developed more than 100 years ago. Although microbiologists speak with pride about the ‘art' of their science, the clinical value of the diagnostic tests is frequently lost because of the delays in reporting results with these ‘traditional' approaches. Fortunately, the practice of clinical microbiology is undergoing a dramatic transformation with the introduction of molecular diagnostics, primarily for rapid diagnosis of infections caused by viruses and difficult to grow bacteria, MALDI-TOF mass spectrometry for identification of bacteria, mycobacteria and fungi, and automation of all practices in bacteriology.

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