Kinetics of IgM and IgG antibodies after scrub typhus infection and the clinical implications.

•The kinetics of IgM and IgG post scrub typhus infection remain elusive.•Scrub typhus patients were followed up to study antibody kinetics.•IgM remained above the threshold for 12 months.•IgG reached a peak at 10 months and remained above the threshold for 36 months.•Paired IgM samples are required for accurate diagnosis.