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Allelic frequencies of ABO blood group in each group.
| Group | Allelic frequency | HWE test P value | ||
|---|---|---|---|---|
| p(A) | q(B) | r(O) | ||
| CHIK seronegativity | 0.19 | 0.19 | 0.62 | 0.06 |
| CHIK seropositivity | 0.18 | 0.18 | 0.64 | 0.38 |
| (i) Asymptomatic infection | 0.17 | 0.19 | 0.64 | 0.71 |
| (ii) Symptomatic infection | 0.19 | 0.17 | 0.63 | 0.12 |
HWE: the Hardy-Weinberg equilibrium.
