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

Methods An analytical case-control study. Data collection took place in different primary health care centres, in the Sexual and Reproductive Health Program (Badalona and Sabadell Units) of the Catalan Health Institute. Pregnant women attending the midwife clinics for prenatal care during the first trimester. The case group included pregnant women who presented positive culture for GBS at 35-37 weeks and the control group included those who had negative culture. The data collection period was from January 2013 to April 2015.