Table 2.

Demographic and occupational characteristics of abattoir workers with IgG antibodies against SFGR, TGR, or orientiae at any time during the study period

	SFGR		TGR		Orientiae		All participants
	n	%	n	%	n	%	n	%
Nationality
Djiboutian	8	100	2	100	2	67	46	94
Somali	0	0	0	0	1	33	2	4
Ethiopian	0	0	0	0	0	0	1	2
Sex
Male	7	88	1	50	2	67	39	80
Female	1	13	1	50	1	33	10	20
Age
< 30	0	0	0	0	0	0	3	6
30–39	1	13	1	50	1	33	17	35
40–49	4	50	1	50	2	67	15	31
≥ 50	3	38	0	0	0	0	14	29
Length of employment (years)*	27 (10–40)		14 (13–15)		17 (15–20)		18 (2–40)
Occupational tasks
Slaughter livestock	7	88	1	50	1	33	33	67
Skin carcasses	6	75	1	50	1	33	35	71
Cut carcasses and process organs	1	13	2	100	0	0	8	16
Clean abattoir facilities	1	13	0	0	1	33	6	12
Administrative work and/or security	0	0	0	0	2	67	3	6
Animal contact
All animal species within the abattoir	3	37	0	0	2	67	17	35
Only cattle and/or camels within the abattoir	3	37	2	100	0	0	27	55
Only sheep and/or goats within the abattoir	2	25	0	0	0	0	5	10
Other animals outside abattoir	2	25	1	50	0	0	12	24
Total	8	100	2	100	3	100	49	100

SFGR = spotted fever group rickettsiae; TGR = typhus group rickettsiae.

^*Average (minimum–maximum).