The results were evaluated in terms of IgG positive (≥10 UI/mL), negative (≤4.9 UI/mL) and borderline (5–9.9 UI/mL); IgM positive (≥1.6 index), negative (<1.2 index) and borderline (1.2–1.59 index). All of the results with IgG and/or IgM borderline were excluded in order ...