Table 2.
Detection of anti-SFTSV antibody in a family cluster in 2015, Korea
| No. | Family cluster | Neutralization test | IgG | ||||||
|---|---|---|---|---|---|---|---|---|---|
| IgG ELISA OD value (SFTSV infected-Mock) > cutoff value | IgM | ||||||||
| 100 | 400 | 1,600 | 6,400 | IFA (IgG) | IgM capture ELISA | IFA (IgM) | |||
| 1 | Patient 1 (A) | < 20 | − | − | − | − | < 20 | − | < 20 |
| 2 | Patient 2 (B) | < 20 | − | − | − | − | < 20 | − | < 20 |
| 3 | Patient 3 (C) | < 20 | − | − | − | − | < 20 | − | < 20 |
| 4 | Family 1 (D) | > 320 | + | + | + | + | 640 | − | < 20 |
| 5 | Family 2 (E) | < 20 | − | − | − | − | < 20 | − | < 20 |
| 6 | Family 3 (F) | < 20 | − | − | − | − | < 20 | − | < 20 |
ELISA = enzyme-linked immunosorbent assay; IFA = immunofluorescence assay; SFTSV = severe fever with thrombocytopenia syndrome virus.