Table 2. Summary of similar studies in the literature, including the present study results, with aqueous and/or vitreous humor analysis in patients with uveitis.

Description	Number of individuals	Uveitis Classification	PCR Positivity	Investigated Pathogens
Rothova et al. (14)	152 patients 40 controls	Posterior	Overall positivity:* 29% (44/152) 34% (15/44 PCR; AH)	T. gondii HSV, VZV, CMV
Santos et al. (12)	27 patients	Anterior Intermediate Posterior Panuveitis	19.2% (5/26; AH) 30% (6/20; VH)	T. gondii HSV, VZV, CMV M. tuberculosis
Kongyai et al. (21)	80 patients	Posterior Panuveitis	30% (24/80) 35% (19/54; AH) 19% (5/26; VH)	T. gondii HSV, VZV, CMV
Scheepers et al. (27)	159 patients	Anterior Intermediate Posterior Panuveitis	59% * (94/159; AH and/or VH)	T. gondii HSV, VZV, CMV M. tuberculosis
Errera et al. (30)	42 patients 16 controls	Anterior	Overall positivity:* 38% (16/42; AH) 35.7% (5/14 PCR; AH)	HSV, VZV, CMV
Santos et al. (31)	55 patients 12 controls	Posterior (toxoplasmic retinochoroiditis)	37.2% (16/43; AH)	T. gondii
Chronopoulos et al. (32)	45 patients	Anterior Intermediate Posterior Panuveitis	48.9% (22/45; AH)	T. gondii HSV, VZV,CMV, EBV
Kumar et al. (33)	126 patients 100 controls	Anterior Intermediate Posterior Panuveitis	32.4% (12/37; AH) 23.6% (21/89; VH)	T. gondii HSV,VZV, CMV
Calvo et al. (34)	14 patients	Posterior (Acute retinal necrosis)	78.5% (11/14; AH)	HSV, VZV
Elyashiv et al. (35)	28 patients	Posterior	57% (16/28; AH)	T. gondii HSV, VZV, CMV
Present study	28 patients	Anterior Posterior Panuveitis	41.7% (5/12; AH) 31.2% (5/12; VH)	T. gondii HSV, CMV, EBV

PCR = polymerase chain reaction; AH = aqueous humor; VH = vitreous humor; T. gondii = Toxoplasma gondii; HSV = herpes simplex virus; VZV = Varicela zoster virus; CMV = cytomegalovirus; EBV = Epstein-Barr virus; M. tuberculosis = Mycobacterium tuberculosis.

^*These studies included other methods beyond PCR analysis.