TABLE 1.
Study participant characteristics and human serum samples positive for EBIV.
| Group | Positive rate (%) |
||
| IgM 1:4 (IFA) | IgG 1:10 (IFA) | PRNT90 | |
| Gender | |||
| Male | 4.00(5/125) | 9.6(14/125) | 0.8(1/125) |
| Female | 13.95(12/86) | 13.95(12/86) | 1.16(1/86) |
| Age group (years) | |||
| 0–20 | 9.52(4/52) | 11.9(6/52) | 0(0/52) |
| 21–40 | 4.34(1/60) | 9.52(5/60) | 0(0/60) |
| 41–60 | 9.52(6/63) | 11.11(7/63) | 3.17(2/63) |
| >60 | 16.67(6/36) | 12.69(8/63) | 0(0/63) |
| Occupation | |||
| Child and student | 9.3(4/43) | 11.63(5/43) | 0(0/43) |
| Farmer and factory worker | 6.17(5/81) | 17.28(14/81) | 2.47(2/81) |
| Soldier | 0(0/47) | 4.26(2/47) | 0(0/47) |
| Retiree | 20(8/40) | 12.5(5/40) | (0/40) |
| With fever symptoms | |||
| No | 0(0/47) | 4.26(2/47) | 0(0/47) |
| Yes | 10.37(17/164) | 14.63(24/164) | 1.22(2/164) |
| Total | 8.05(17/211) | 12.3(26/211)a | 0.95(2/211)b |
aThe IgM-positive population was not the same as the IgG-positive population; only four cases were both IgM and IgG positive. bThese two PRNT-positive patients were positive for IgG but not for IgM.