Robinson, C., Heather, Z., Slater, J. D., Potts, N., Steward, K. F., Maskell, D. J., …Waller, A. S. (2015). Vaccination with a live multi-gene deletion strain protects horses against virulent challenge with Streptococcus equi. VACCINE, 33(9), 1160-1167. https://doi.org/10.1016/j.vaccine.2015.01.019