Table 3.

Differences in presence of B lymphocytes, T lymphocytes and macrophages in the intima, media and adventitia of the abdominal aneurysmal wall of patients with chronic Q fever compared with patients negative for Q fever infection

Presence of B lymphocytes, T lymphocytes and macrophages	Chronic Q fever+ (N = 7) N	Q fever− (N = 15) N	P-value
Intima B lymphocytes
Not present or mild	7	15	–
Moderate or severe	0	0
Media B lymphocytes
Not present or mild	7	15	–
Moderate or severe	0	0
Adventitia B lymphocytes
Not present or mild	3	5	0.510
Moderate or severe	4	10
Intima T lymphocytes
Not present or mild	6	14	0.545
Moderate or severe	1	1
Media T lymphocytes
Not present or mild	3	14	0.021
Moderate or severe	4	1
Adventitia T lymphocytes
Not present or mild	0	7	0.038
Moderate or severe	7	8
Intima macrophages
Not present or mild	3	6	0.628
Moderate or severe	4	9
Media macrophages
Not present or mild	3	9	0.384
Moderate or severe	4	6
Adventitia macrophages
Not present or mild	1	12	0.007
Moderate or severe	6	3

Chronic Q fever+: group of patients with chronic Q fever (corresponding serological profile and PCR positive on tissue); Q fever−: group of patients without Q fever (negative serological profile and PCR negative on tissue).

P-value calculated using Fisher's exact test.

Bold values were significant.