Table 2.

Distribution of the Optical Densities Ratio (P/N) Determined by the Indirect WNV IgG ELISA for the 20 White-Tailed Deer Sera Samples That Were Negative for WNV/SLEV Antibodies

OD ratio (P/N*)	No. of deer samples
2–2.5	7
2.5–3	4
3–3.5	3
3.5–4	2
4–5.2	4

^*OD ratio was ≥2.0 for antibody positive samples.

ELISA, enzyme-linked immunosorbent assay; IgG, immunoglobulin G; OD, optical density.