Journal
CLINICAL INFECTIOUS DISEASES
Volume 74, Issue 5, Pages 924-932Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/cid/ciab155
Keywords
metagenomics; next-generation sequencing; multiplex PCR; 16S rRNA gene PCR; fever; fever of unknown origin; pyrexia; pyrexia of unknown origin
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Despite the continued prevalence of infectious diseases as the main cause of fever of unknown origin, advancements in molecular technologies offer hope in transforming the investigation of this condition by potentially replacing traditional microbial identification methods.
Even well into the 21st century, infectious diseases still account for most causes of fever of unknown origin (FUO). Advances in molecular technologies, including broad-range polymerase chain reaction (PCR) of the 16S ribosomal RNA gene followed by Sanger sequencing, multiplex PCR assays, and more recently, next-generation sequencing applications, have transitioned from research methods to more commonplace in some clinical microbiology laboratories. They have the potential to supplant traditional microbial identification methods and antimicrobial susceptibility testing. Despite the remaining challenges with these technologies, publications in the past decade justify excitement about the potential to transform FUO investigations. We discuss available evidence using these molecular methods for FUO evaluations, including potential cost-benefits and future directions. Advances in molecular diagnostic technologies, such as broad-range polymerase chain reaction (PCR) of the 16S rRNA gene, multiplex PCR assays, and next-generation sequencing applications, are becoming more commonplace in some clinical microbiology laboratories, with the potential to transform fever of unknown origin investigations.
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