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An example of such testing is antibiotic susceptibility testing by measurement of minimum inhibitory concentration which is routinely used in medical microbiology and research. If a suspension used is too heavy or too dilute, an erroneous result (either falsely resistant or falsely susceptible) for any given antimicrobial agent could occur.
Routine biochemical methods for identification of bacteria vary widely in their identification of this organism: the API 20NE system accurately identifies B. pseudomallei in 99% of cases, [26] as does the automated Vitek 1 system, but the automated Vitek 2 system only identifies 19% of isolates. [24]
The analytical profile index, or API, is a classification system for bacteria based on biochemical tests. The system was developed to accelerate the speed of identifying clinically relevant bacteria. It can only be used to identify known species from an index. [1] The data obtained are phenotypic traits.
Once a bacterium has been identified following microbiological culture, antibiotics are selected for susceptibility testing. [5] Susceptibility testing methods are based on exposing bacteria to antibiotics and observing the effect on the growth of the bacteria (phenotypic testing), or identifying specific genetic markers (genetic testing). [6]
Examining colonial morphology is the first step in the identification of an unknown microbe. The systematic assessment of the colonies' appearance, focusing on aspects like size, shape, colour, opacity, and consistency, provides clues to the identity of the organism, allowing microbiologists to select appropriate tests to provide a definitive ...
Automated bacterial identification system results should be observed with caution, especially when a patient with Gram-negative bacteremia does not improve with broad-spectrum antibiotic therapy, because several bacteria, including Aeromonas salmonicida (mistaken by ID32 GN [6]) and Sphingobacterium spp. (mistaken by Vitek 2 [9]), may be ...
Species identification based on environmental DNA could be particularly useful for cyanobacteria, as traditional identification using microscopy is challenging. Their morphological characteristics which are the basis for species delimitation vary in different growth conditions.
The identification of E. corrodens may be delayed because of its slow growth in the absence of CO 2. [16] E. corrodens can be treated with penicillins , cephalosporins , or tetracyclines , however due to the resistant nature of the bacteria ongoing and recurring symptoms can be expected despite rigorous and prolonged antibiotic treatment. [ 17 ]