Table. Ticks collected from humans in South Korea during a study of severe fever with thrombocytopenia syndrome virus, 2013*.
| Tick species, developmental stage | No. ticks | No. pools | No. SFTSV-positive pools | MIR, % |
|---|---|---|---|---|
| Haemaphysalis longicornis | ||||
| Larvae | 0 | 0 | 0 | 0 |
| Nymphs | 85 | 34 | 1 | 1.2 |
| Adults, sex | ||||
| M | 5 | 5 | 0 | 0 |
| F | 122 | 109 | 11 | 9.0 |
| Subtotal |
212 |
148 |
12 |
5.7 |
| Haemaphysalis flava | ||||
| Larvae | 0 | 0 | 0 | 0 |
| Nymphs | 9 | 4 | 0 | 0 |
| Adults, sex | ||||
| M | 2 | 2 | 0 | 0 |
| F | 3 | 3 | 0 | 0 |
| Subtotal |
14 |
9 |
0 |
0 |
| Haemaphysalis japonica | ||||
| Larvae | 0 | 0 | 0 | 0 |
| Nymphs | 0 | 0 | 0 | 0 |
| Adults, sex | ||||
| M | 0 | 0 | 0 | 0 |
| F | 1 | 1 | 0 | 0 |
| Subtotal |
1 |
1 |
0 |
0 |
| Amblyomma testudinarium | ||||
| Larvae | 0 | 0 | 0 | 0 |
| Nymphs | 16 | 13 | 4 | 25.0 |
| Adults, sex | ||||
| M | 0 | 0 | 0 | 0 |
| F | 1 | 1 | 0 | 0 |
| Subtotal |
17 |
14 |
4 |
23.5 |
| Ixodes nipponensis | ||||
| Larvae | 0 | 0 | 0 | 0 |
| Nymphs | 3 | 3 | 2 | 66.7 |
| Adults, sex | ||||
| M | 0 | 0 | 0 | 0 |
| F | 12 | 12 | 0 | 0 |
| Subtotal |
15 |
15 |
2 |
13.3 |
| Ixodes persulcatus | ||||
| Larvae | 0 | 0 | 0 | 0 |
| Nymphs, sex | 0 | 0 | 0 | 0 |
| Adults | ||||
| M | 0 | 0 | 0 | 0 |
| F | 1 | 1 | 0 | 0 |
| Subtotal |
1 |
1 |
0 |
0 |
| Ixodes granulatus | ||||
| Larvae | 0 | 0 | 0 | 0 |
| Nymphs | 0 | 0 | 0 | 0 |
| Adults, sex | ||||
| M | 0 | 0 | 0 | 0 |
| F | 1 | 1 | 0 | 0 |
| Subtotal |
1 |
1 |
0 |
0 |
| Total | ||||
| Larvae | 0 | 0 | 0 | 0 |
| Nymphs | 113 | 54 | 7 | 6.2 |
| Adults, sex | ||||
| M | 7 | 7 | 0 | 0 |
| F | 141 | 128 | 11 | 7.8 |
| Total | 261 | 189 | 18 | 6.9 |
*Pools of nymphal and adult ticks contained 1–30 ticks/pool and 1–5 ticks/pool, respectively. MIR, SFTSV minimum infection rate per 100 ticks (no. positive pools/total no. ticks assayed); SFTSV, severe fever with thrombocytopenia syndrome virus.