TABLE 1.
Prevalence of anti-EhMSP-1 IgG antibodies in South Africans with anti-E. histolytica IgG antibodies as determined by a positive commercial RidaScreen ELISA
| Result typea | No. with anti-EhMSP-1 resultb: |
||
|---|---|---|---|
| Negative | Positive | Total | |
| RidaScreen negative | 2 | 0 | 2 |
| RidaScreen positive | 3 | 9 | 12 |
| Total | 5 | 9 | 14 |
a
The RidaScreen assay and interpretation were performed according to the manufacturer's instructions.
b
ELISA for detection of anti-EhMSP-1 IgG was performed using immobilized, recombinant EhMSP-1 as antigen. Positivity was defined as an optical density at 450 nm of ≥2 standard deviations above the mean result for sera that were negative by the RidaScreen test.