Fig. 1
Comparison of Saudi and Non-Saudi residents with IgG seropositivity to Schistosoma mansoni
| Nationality | No. examined | Infected n (%) | P- value |
|---|---|---|---|
| Saudi | |||
| Male | 30 | 4 (13.3) value with different superscript in the same column differ at p<0.05 | |
| Female | 30 | 0 (0) value with different superscript in the same column differ at p<0.05 | |
| Total | 60 | 4 (7) | |
| <0.005 | |||
| Non-Saudi | |||
| Male | 70 | 32 (46) value with different superscript in the same column differ at p<0.05 | |
| Female | 50 | 6 (12) value with different superscript in the same column differ at p<0.05 | |
| Total | 120 | 38 (32) |
Distribution ofanti-SchistosomamansoniIgG with socio-demographic variables, among examined participant from the Najran region, Southern Kingdom of Saudi Arabia
| Variables | Schistosomiasis | ||
|---|---|---|---|
| No. examined | Infected n (%) | P- value | |
| Sex | |||
| Male | 100 | 36 (36) | |
| Female | 80 | 6(7.5) | <0.001 |
| Site of residence | |||
| Aluraysah | 66 | 16(24.2) | |
| Al Khaledia | 30 | 6(20) | |
| Alfyselia | 48 | 14(29.2) | 0.516 |
| El-ballad | 36 | 6(16.7) | |
| Fathers’ educational levels | |||
| Primary | 60 | 24 (40) | |
| Secondary | 60 | 15(25) | <0.001 |
| University | 60 | 3(5) | |
Diagnostic performance of indirect hemagglutination assay (IHA) and enzyme-linked immunosorbent assay IgG (ELISA IgG) of participants (n=180) with antibodies against schistosomiasis
| Variables | ELISA IgG | |||||
|---|---|---|---|---|---|---|
| Serological tests | -VE (Negative) n=138 | +VE (Positive) n=42 | Sensitivity (Se) | Specifi city (Sp) | K value | SE of kappa |
| IHA(+VE) | 0 | 36 | ||||
| IHA(-VE) | 138 | 6 | 0.857(0.714 – 0.945) | 0.1 (0.973 – 0.1) | 0.902 | 0.039 |
Indirect haemagglutination assay (IHA) and enzyme-linked immunosorbent assay (ELISA) seroprevalence of Schistosomiasis in Najran region, Southern Kingdom of Saudi Arabia
| Titer | |||||||
|---|---|---|---|---|---|---|---|
| Taete | Number of total samples | Number of positive samples (%) | 1:1280 | 1:640 | 1:320 | 1:160 | 1:1280 |
| IHA | 180 | 36 (20) | 14 | 6 | 4 | 12 | 14 |
| Eliza | 180 | 42(23.3) | - | - | - | - | - |
| P-value= 0.44 | |||||||
Seroprevalence and frequency of anti-Schistosoma mansoni IgG antibody (ELISA Test) among different age groups of participants from the Najran region, Southern Kingdom of Saudi Arabia
| Age range (years) | No. tested | No. positive | % | No. negative | % | OR (95% confidence) | 95% CI | P-value |
|---|---|---|---|---|---|---|---|---|
| 10 – 19 Reference category, OR-odds ratio, CI – confidence interval | 60 | 6 value with different superscript in the same column differ at p<0.05 | 10 | 54 | 90 | |||
| 20 – 40 | 60 | 24 value with different superscript in the same column differ at p<0.05 value with different superscript in the same column differ at p<0.05 | 40 | 36 | 60 | 6.0 | 2.232 – 16.132 | <0.001 |
| >40 | 60 | 12 value with different superscript in the same column differ at p<0.05 | 20 | 48 | 80 | 2.25 | 0.784 – 6.456 |