Detección del gen rib en cepas invasivas y colonizantes de Streptococcus agalactiae en Misiones

the aim of this work was to study the distribution of a gene associated with streptococcus agalactiae (group b streptococcus, gbs) virulence in colonizing isolates from pregnant women and invasive isolates from newborn infants. we also aimed to contribute with useful data for epidemiological studies and formulation of a regional vaccine. a total of 34 colonizing isolates and 7 invasive isolates was analyzed for detection of rib gene by specific pcr. the rib gene was present in 87.8 % of the isolates, without significant differences (p>0.05) between colonizing and invasive ones. it was concluded that in the population studied, the rib gene in gbs strains was distributed comparably in colonizing isolates from pregnant women and invasive isolates from newborn infants with severe disease.