Table 3.

Symptoms for patients with primary DENV infections.

	Dengue 1	Dengue 2	Dengue 3	Dengue 4
	OR (95% CI)	OR (95% CI)	OR (95% CI)	OR (95% CI)
	N (%)	N (%)	N (%)	N (%)
Arthralgia	0.0	4.0 (0.45–35.35)	2.34E−009	2.33 (0.22–24.4)
	0	6 (14.2%)	0	1 (20%)
Myalgia	1.11 (0.25–4.84)	0.76 (0.28–2.05)	1.11 (0.31–3.89)	1.71 (0.26–10.93)
	4 (50%)	19 (45.2%)	6 (50%)	3 (60%)
Headache	0.45 (0.06–2.91)	1.02 (0.37–2.8)	0.69 (0.15–3.09)	6.78 (0.71–64.42)
	2 (25%)	17 (40.4%)	4 (33.3%)	4 (80%)
Rash	0.74 (0.08–6.82)	0.59 (0.15–2.28)	1.10 (0.2–5.99)	4.25 (0.61–29.520
	1 (12.5%)	5 (12%)	2 (16.6%)	2 (40%)
Hemorrhagic manifestations	1.63 (0.31–10.75)	1.23 (0.33–4.61)	0.90 (0.17–4.76)	6.78E−009
	2 (25%)	8 (19%)	2 (16.6%)	0
Fever ≥38°C	0.08 (0.01–0.75)	1.50 (0.54–4.15)	0.92 (0.24–3.390	618E+006
	1 (12.5%)	23 (54.7%)	6 (50%)	5 (100%)
Nausea/vomiting	0.62 (0.13–2.89)	1.32 (0.44–3.92)	0.75 (0.19–2.86)	4.3 (0.23–78.63)
	5 (62.5%)	31 (73.8)	8 (66.6%)	4 (80%)
Burning micturition	0.79 (0.08–7.25)	0.54 (0.13–2.09	2.28 (0.49–10.53)	1.47 (0.14–14.72)
	1 (12.5%)	5 (12%)	3 (25%)	1 (20%)
Neurologic symptoms	2.37E−009	3.1 (0.61–15.88)	1.02 (0.19–5.47)	6.92E−009
	0	9 (21.4%)	2 (16.6%)	0
Dengue fever diagnosis	1.62 (0.27 to 9.49)	0.96 (0.33–2.8)	0.87 (0.22–3.38)	0.73 (0.08–6.58)
	6 (75%)	27 (62.4%)	7 (58.3%)	3 (60%)
Antibiotics prescribed	0.40 (0.07–2.15)	1.42 (0.50–4.03)	1.13 (0.3–4.2)	0.88 (0.13–5.670
	2 (25%)	18 (42.8%)	5 (41.6%)	2 (40%)
Eye pain	0.0	204E+006	6.88E−009	0.0
	0	3 (7%)	0	0
Fever ≥38.5°C	1.83E−009	0.91 (0.26–2.19)	2.78 (0.7–9.1)	1.55 (0.53–22.76)
	0	12 (26.2%)	6 (50%)	2 (40%)

Logistic analysis was performed in which a single serotype was compared against the other serotypes. These patients were NS1 and RT-PCR positive for only one serotype and negative for DENV neutralizing antibodies via PRNT. Bold font indicates statistical significance. OR, odds ratio; CI, confidence interval; N, number of patients.