Association of ABO Blood Group Phenotype and Allele Frequency with Chikungunya Fever

Table 3

Allelic frequencies of ABO blood group in each group.

Group	Allelic frequency			HWE test value
	A	B	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.