Table 2. Cross reactivities of ImmuneMed Leptospira IgM Duo (ICA) Rapid tests with other causes of acute febrile illnesses.
| Total No. of serum samples tested positive serologically to other types of infectious diseases | ImmuneMed Leptospira IgM Duo Rapid test | Percentage of cross reactivity | |
|---|---|---|---|
| Positive | Negative | ||
| Dengue (n = 10) | 1 | 9 | 10 |
| Typhus (n = 5) | 0 | 5 | 0 |
| Syphilis (VDRL) (n = 5) | 1 | 4 | 20 |
| Scrub typhus (n = 10) | 2 | 8 | 20 |
| Melioidosis (n = 5) | 0 | 5 | 0 |
ICA = immunochromatographic assay, VDRL = venereal disease research laboratory.