A survey of Erysipelothrix insidiosa agglutinating antibody titers in vaccinated porpoises (Tursiops truncatus).

Antibody activity against Erysipelothrix insidiosa was measured in 15 porpoises which had undergone a series of vaccinations, at 6 month intervals, with erysipelas bacterin. Relatively high levels of aggluntinating antibodies were found to persist in the serum for a least 6 months following booster inoculations of the vaccine.