Virulence Profiles and Antimicrobial Resistance of Streptococcus agalactiae Infective and Colonizing Strains from Argentina.

Streptococcus agalactiae (GBS) is a colonizing agent in pregnant women, the main cause of invasive neonatal infections, and the reason of serious diseases in non-pregnant adults. Several virulence determinants are involved in the pathogenesis. These include capsular polysaccharide, surface-localized proteins, and toxins.