Volume 24, Number 7—July 2018
Typhus Group Rickettsiosis, Germany, 2010–20171
|Category||Result, % patients||Days of illness during which serologic results were obtained, range (median)|
|Observed seroconversion||18 (always with parallel IgM, IgA, and IgG detection)*||10–41 (12)†|
|Parallel IgM and IgG/total Ig detection in first sample||64||7–180 (10)‡|
|Parallel IgM, IgA, and IgG detection in first sample||46||7–39 (10)|
|Only 1 IgG or total Ig titer of >320 in any sample||14||10–99 (14)§|
*1 patient showed 1 typhus group rickettsiae–specific IgM in the first sample, followed by IgA and IgG seroconversion in the follow-up sample.
†1 patient returned 41 d after the initial visit and showed seroconversion.
‡For 1 patient, serum was collected 180 d after a disease compatible with typhus group rickettsiosis had occurred.
§For 1 patient, serum was collected 99 d after a disease compatible with typhus group rickettsiosis had occurred.
1Part of this study was orally presented at the annual meeting of the German Society for Hygiene and Microbiology, February 19–21, 2018, Bochum, Germany.