Risk factors associated with the colonization of group b streptococcus during pregnancy: preliminary results

In Spain, the rate of colonization with GBS in pregnant women is 11%-18.2% and in Catalonia between 13-16%. The vertical transmission rate is 50%, and in the absence of avoidance manoeuvres, between 1-2% of new-borns develop GBS infection, which is the main bacterial agent in neonatal sepsis precocious.