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Table 6 Combined serum and aqueous humor Leptospira titer results and the corresponding Leptospira c-value results

From: Intravitreal injection of low-dose gentamicin for the treatment of recurrent or persistent uveitis in horses: Preliminary results.

Titer negative titer(s) SINGLE SEROVAR positive titer (<  1:400) MULTIPLE SEROVARS positive titers (1:100–1:400) SINGLE SEROVAR positive titer (>  1:400) MULTIPLE SEROVARS positive titers (>  1:400)
Serum (n = 80) 41 (51.3%) 20 (25.0%) 10 (12.5%) 6 (7.5%) 3 (3.8%)
Aqueous humor (n = 79) 49 (62.0%) 11 (13.9%) 1 (1.3%) 13 (16.5%) 5 (6.3%)
C-value(different serovars) NO positive c-value SINGLE positive c-value (less than 4) MULTIPLE positive c-values (less than 4) SINGLE positive c-value (greater than 4) MULTIPLE positive c-values (greater than 4)
C-value (n = 79) 50 (63.3%) 12 (15.2%) 1 (1.3%) 11 (13.9%) 5 (6.3%)