Table 1. TNF-alpha genotypes found in subjects from an endemic area according to the presence or absence of infection.

	Seropositive individuals		Seronegative individuals		p value (X2)
Genotype	N	%	N	%
TNF-238AA	26	26	22	19.30
TNF-238GA	20	20	14	12.3	p = 0.08
TNF-238GG	54	54	78	68.4
Total	100	100	114	100.0
TNF-308AA	06	3.6	08	6.1
TNF-308GA	52	31.0	34	25.8	p = 0.41
TNF-308GG	110	65.4	90	68.1
Total	168	100.0	132	100.0