Seroprevalence of Human Brucellosis among Syrian Refugees in Jordan, 2022

Table 1

The demographic and relevant characteristics of participants according to Brucella IgG test result.

Characteristics	Total N (%) (N = 1562)	IgG-positive n (%) (N = 149)	IgG-negative n (%) (N = 1413)	P value
Sex				0.365
Male	1186 (75.9)	118 (79.2)	1068 (75.6)
Female	376 (24.1)	31 (20.8)	345 (24.4)
Age (year)				0.134
18–39	1101 (70.5)	95 (63.8)	1006 (71.2)
40–60	421 (27.0)	49 (32.9)	372 (26.3)
>60	37 (2.4)	2 (1.3)	35 (2.5)
Employment status				0.922
Unemployed	1150 (73.7)	111 (74.5)	1039 (73.6)
Employed	410 (26.3)	38 (24.5)	372 (26.4)
Family size				0.464
Single-member household	242 (15.5)	22 (14.8)	220 (15.6)
2–5 members	372 (23.8)	38 (25.5)	334 (23.7)
5–10 members	912 (58.4)	83 (55.7)	829 (58.6)
>10 members	36 (2.3)	6 (4.0)	30 (2.1)
Residential area				0.009
Outside the refugee camp	1233 (78.9)	129 (86.6)	1103 (78.0)
Inside the refugee camp	329 (21.1)	20 (13.4)	309 (21.9)
History of brucellosis	35 (2.2)	21 (14.1)	14 (1.0)	≤0.001
Having a family member with a previous diagnosis of brucellosis	17 (1.1)	8 (5.4)	9 (0.6)	≤0.001
Engaged in the following activities in the last 6 months
Prepared dairy products at home	175 (11.2)	23 (15.4)	152 (10.8)	0.086
Handled animals	56 (3.6)	23 (15.4)	33 (2.3)	≤0.001
Slaughtered animals	32 (2.0)	12 (8.1)	20 (1.4)	≤0.001
Handled animal tissues	31 (2.0)	14 (9.4)	17 (1.2)	≤0.001
Ate raw meat	11 (0.7)	2 (1.3)	9 (0.6)	0.283
Consumed unpasteurized milk	18 (1.2)	6 (4.0)	12 (0.8)	0.005
Consumed raw or unpasteurized dairy products	33 (2.1)	4 (2.7)	29 (2.1)	0.388
Engaged in a known risk factor for brucellosis	243 (15.6)	40 (26.8)	203 (14.4)	≤0.001