Antimicrobial Susceptibility Survey of Invasive Haemophilus influenzae in the United States in 2016

Autor: Caelin C. Potts, Lorraine D. Rodriguez-Rivera, Adam C. Retchless, Sean A. Buono, Alexander T. Chen, Henju Marjuki, Amy E. Blain, Xin Wang
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Microbiology Spectrum, Vol 10, Iss 3 (2022)
Druh dokumentu: article
ISSN: 2165-0497
DOI: 10.1128/spectrum.02579-21
Popis: ABSTRACT Antibiotics are important for the treatment and prevention of invasive Haemophilus influenzae disease. Reduced susceptibility to clinically relevant drugs, except ampicillin, has been uncommon in the United States. Susceptibility of 700 invasive H. influenzae isolates, collected through population-based surveillance during 2016, was assessed for 15 antibiotics using broth microdilution, according to the CLSI guidelines; a subset of 104 isolates were also assessed for rifampin susceptibility using Etest. Genomes were sequenced to identify genes and mutations known to be associated with reduced susceptibility to clinically relevant drugs. A total of 508 (72.6%) had reduced susceptibility to at least one antibiotic and more than half of the isolates exhibited reduced susceptibility to only one (33.6%) or two (21.6%) antibiotic classes. All tested isolates were susceptible to rifampin, a chemoprophylaxis agent, and
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