Table 1.

Seroprevalence for EEEV with 95% CL of wild bird species for which at least one bird tested antibody positive by plaque reduction neutralization test

Species (n)	% Positive (95% CL)
Canada goose (Branta candensis) (366)	1.1 (0.4–2.8)
Mallard (Anas platyrhynchos) (58)	3.5 (1.0–11.7)
Mute swan (Cygnus olor) (90)	5.6 (2.4–12.4)
Wood duck (Aix sponsa) (4)	25.0 (4.6–70.0)
Common raven (Corvus corax) (3)	33.3 (6.2–79.2)
Laughing gull (Leucophaeus atricilla) (19)	5.3 (0.9–24.6)
Double-crested cormorant (Phalacrocorax auritus) (79)	2.5 (0.7–8.8)
American coot (Fulica americana) (12)	16.7 (4.7–44.8)
White ibis (Eudocimus albus) (6)	33.3 (9.7–70.0)

CL = confidence limits; EEEV = eastern equine encephalitis virus.