Homologous whole bacterin vaccination is not able to reduce Streptococcus suis serotype 9 strain 7997 transmission among pigs or colonization
Keywords: sly, suilysin gene; mrp, muramidase-released protein gene; ef, extracellular factor gene; COLSH, Columbia agar culture plates with 6% sheep blood; ON, overnight; TH, Todd-Hewitt broth medium; OD600, optical density measured at 600 nm; CD/CD, caesarean der