Side-by-side comparison of H serotyping and MS-H typing of <i>E. coli</i> H types with the Orbitrap platform^a.

-, serotyping titration or MS identification was not reached. aSerotyping and MS-H were performed concurrently from subcultures of single bacterial colonies. MS-H was repeated on two consecutive days; bmotility induction was performed for these inconsistent strains after initial MS-H; cuntypeable by serotyping although previous MS and PCR-based sequencing showed type H21; dusing designated antisera by MS-H.