Journal of Tropical Medicine

Research Article

Determination of Seroprevalence and Risk Factors of Crimean–Congo Haemorrhagic Fever (CCHF) in the Endemic Region in Turkey: A Population-Based Cross-Sectional Study

Table 5

Logistic regression analysis of some CCHF-related risk factors for anti-CCHFV IgG seropositivity of the participants (n = 2319).


Variables		Anti-CCHFV IgG		value	COR (95% CI)	AOR (95% CI)
Variables		Seropozitivity n (%)	Seronegativity n (%)	value	COR (95% CI)	AOR (95% CI)

Location	Urban	70 (5.2)	1284 (94.8)	0.28	Ref.
Location	Rural	60 (6.2)	905 (93.8)	0.28	1.22 (0.85–1.74)

Farming	No	93 (4.7)	1875 (95.3)	<0.001	Ref.	Ref.
Farming	Yes	37 (10.5)	314 (89.5)	<0.001	2.38 (1.59–3.54)	1.84 (1.18–2.86)

Animal husbandry	No	66 (4.3)	1485 (95.7)	<0.001	Ref.	Ref.
Animal husbandry	Yes	64 (8.3)	704 (91.7)	<0.001	2.05 (1.43–2.92)	1.64 (1.04–2.27)

Having a pet at home	No	104 (5.4)	1806 (94.6)	0.467	Ref.
Having a pet at home	Yes	26 (6.4)	383 (93.6)	0.467	1.18 (0.76–1.84)

Tick contact history	No	93 (4.8)	1856 (95.2)	<0.001	Ref.	Ref.
Tick contact history	Yes	37 (10)	333 (90)	<0.001	2.22 (1.49–3.30)	1.02 (1.03–2.29)

Duration of with tick contact	≤1 year	15 (12.2)	108 (87.8)	0.293	Ref.
	2–4 years	13 (11.4)	101 (88.6)		0.93 (0.42–2.04)
	≥5 years	9 (6.8)	124 (93.2)		0.52 (0.22–1.24)

Hospitalization with suspected CCHF	No	121 (5.3)	2174 (94.7)	<0.001	Ref.	Ref.
Hospitalization with suspected CCHF	Yes	9 (37.5)	15 (62.5)	<0.001	10.78 (4.62–5.13)	6.65 (2.70–16.43)

Is there anyone in your family who was treated for CCHF?	No	117 (5.4)	2040 (94.6)	0.165	Ref.
Is there anyone in your family who was treated for CCHF?	Yes	13 (8)	149 (92)	0.165	1.52 (0.84–2.77)

If there is anyone in your family who was treated for CCHF, what is the health status? (n = 162)	Is alive	11 (7.4)	138 (92.6)	0.308	Ref.
	Is dead	2 (15.4)	11 (84.6)	0.308	2.28 (0.45–11.61)

Is there anyone diagnosed with CCHF where you live?	No	95 (4.8)	1864 (95.2)	<0.001	Ref.	Ref.
Is there anyone diagnosed with CCHF where you live?	Yes	35 (9.7)	325 (90.3)	<0.001	2.11 (1.41–3.17)	1.66 (1.08–2.56)

If there is anyone diagnosed with CCHF where you live, what is the health status? (n = 360)	Is alive	22 (9.1)	220 (90.9)	0.563	Ref.
	Is dead	13 (11)	105 (89)	0.563	1.24 (0.60–2.55)

Anti-CCHFV IgG, anti-Crimean–Congo haemorrhagic fever virus immunoglobulin G; COR, crude odds ratio; AOR, adjusted odds ratio; CI, confidence interval; value of Yates’ corrected X² test for anti-CCHFV IgG serology subgroup comparison.