Recent advances in technology over the last decade have propelled the microbiology laboratory into a pivotal role in infection prevention and control. The rapid adaptation of molecular technologies to the field of clinical microbiology now greatly influences infectious disease management and significantly impacts infection control practices. This review discusses recent developments in molecular techniques in the diagnosis of infectious diseases. It describes the basic concepts of molecular assays, discusses their advantages and limitations, and characterizes currently available commercial assays with respect to cost, interpretive requirements, and clinical utility.
During the enterovirus D68 (EV-D68) outbreak of 2014, the BioFire FilmArray (FA) respiratory panel was used to detect rhinovirus/enterovirus in respiratory specimens; suspected EV-D68-positive specimens were sent to CDC for confirmation. Positive rhinovirus/enterovirus FA targets revealed patterns loosely associated with EV-D68 that may be useful for confirmation triaging.
Multiplex polymerase chain reaction (PCR) tests are useful for the rapid detection of pathogens, though diagnostic challenges may arise. We report 2 immunocompromised patients with Bordetella bronchiseptica respiratory infection misdiagnosed as Bordetella pertussis using PCR, including discussion of transmission, diagnostic testing, clinical implications, and infection control considerations.
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