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Table 3 Diagnosis of scrub typhus by acute-phase IgG or IgM IFA onlya

From: An ELISA assay using a combination of recombinant proteins from multiple strains of Orientia tsutsugamushi offers an accurate diagnosis for scrub typhus

Diagnosis IgG ≥ 400 IgM ≥ 400 IgG and IgM both ≥400
Scrub typhus 47 48 36
Co-infection 5 4 2
  1. aA total of 66 positive samples were identified based on titer of 400 for IgG or IgM or both as determined by IFA