Microencapsulation of Streptococcus equi antigens in biodegradable microspheres and preliminary immunisation studies.

Streptococcus equi subspecies equi is the causative agent of strangles, a bacterial infection of the respiratory tract of equidae. Current strategies to prevent strangles rely on antimicrobial therapy or immunisation with inactivated bacteria, S. equi bacterin, or M-like protein (SeM) extract.