| streptococcus agalactiae in a large portuguese teaching hospital: antimicrobial susceptibility, serotype distribution, and clonal analysis of macrolide-resistant isolates. | group b streptococci are emerging as a cause of serious infection worldwide. the capsular polysaccharides are not only important virulence factors but also the target of vaccine development efforts. serotypes iii (24.6%), v (23.4%), ia (17.8%), and ii (16.3%) were the most prevalent among 252 streptococcus agalactiae isolates collected during 1999-2002 in the largest hospital of lisbon, portugal. the substantial proportion of bacteremic patients (17 neonates and 21 adults) in this period illustr ... | 2004 | 15140391 |