Volume 24, Number 3—March 2018
Capsule Typing of Haemophilus influenzae by Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry1
|Capsule type||No. tested||No. correct†||No inconclusive‡||No. incorrect§||Sensitivity, %||Specificity, %|
|All encapsulated isolates (b, e, and f)||28||28||0||0||100||100|
*Hib, H. influenzae type b; Hie, H. influenzae type e; Hif, H. influenza type f; MALDI-TOF, matrix-assisted laser desorption/ionization time-of-flight; ST, sequence type.
†>5/6 spectra classified to the same correct type.
‡<4/6 spectra classified to the same type.
§>5/6 spectra classified to the same incorrect type.
¶All classified to the ST6-related Hib lineage.
#All classified to the established ST124-related Hif lineage.
1Preliminary results from this study were presented at the IDWeek 2016 Conference, October 26−30, 2016, New Orleans, Louisiana, USA.
2These senior authors contributed equally to this article.