Horses demonstrating adverse vaccine reaction (Reactors)
Horses with a history of severe adverse vaccine reaction were evaluated for BSA-specific IgE expression at the time of evident vaccine reaction (Figure 3). At the time of initial IgE assessment following a vaccine reaction, mean BSA-specific IgE OD +/- SD for all reactors was 0.286 +/- 0.08. Comparing the mean BSA-specific OD values for reactors and healthy horses at similar time points, there was a trend for higher OD values, but the differences were not statistically significant (Figure 3). ELISA measurement effectively allowed for an assessment of immunoglobulin expression.