Serological Evidence of West Nile Virus Infection Among Humans, Horses, and Pigeons in Saudi Arabia

Figures & data

Figure 1 Map of Saudi Arabia showing the location of Eastern Province and the regions of Al-Qatif and Al-Ahsa.

Table 1 Frequency of WNV IgG Antibodies Among Human Samples Based on Gender and Age Groups

Age Groups in Years	WNV IgG Positive				WNV IgG Negative				Total
	Female		Male		Female		Male
	N	%	N	%	N	%	N	%	N
<20	0	0.00	1	12.50	0	0.00	7	87.50	8
20-<30	0	0.00	4	8.70	8	17.39	34	73.91	46
30-<40	0	0.00	5	7.46	10	14.93	52	77.61	67
40-<50	2	3.23	1	1.61	28	45.16	31	50.00	62
50-<60	5	6.25	4	5.00	40	50.00	31	38.75	80
60-<70	3	6.38	4	8.51	19	40.43	21	44.68	47
≥70	0	0.00	2	22.22	3	33.33	4	44.44	9
Total	10	3.10	21	6.50	110	34.06	182	56.35	323

Note: Age information was missing for 4 samples in the negative group.

Table 2 Frequency of WNV IgG Antibodies Among Horse Samples from Two Areas

	Al-Qatif					Al-Ahsa
	Positive		Negative		Total	Positive		Negative		Total
	N	%	N	%		N	%	N	%
Gender
Female	25	86.21	4	13.79	29	17	80.95	4	19.05	21
Male	46	63.89	26	36.11	72	17	68.00	8	32.00	25
Age group years
<5	26	63.41	15	36.59	41	21	75.00	7	25.00	28
5-<10	39	76.47	12	23.53	51	7	63.64	4	36.36	11
≥10	6	66.67	3	33.33	9	6	85.71	1	14.29	7