Prenatal and neonatal Group B Streptococcus screening and serotyping in Lebanon: incidence and implications

Acta Obstet Gynecol Scand. 2010 Mar;89(3):399-403. doi: 10.3109/00016340903560008.


The study aimed at determining the prevalence, risk factors, perinatal transmission, and serotypes of Group B Streptococcus (GBS) among pregnant women and their newborns in Beirut, Lebanon. This was a cross-sectional study of all pregnant women admitted from February to September 2006 to three major hospitals. Overall, 137 of 775 (17.7%) mothers and 50 of 682 newborns (7.3%) tested positive for GBS. Maternal colonization was not associated with maternal age, household income, gravidity, intrapartum fever, preterm labor, or premature rupture of membrane. Transmission rate was 40/120 (30%). Serotype 5 (24.1%) was the most common followed by serotype 1a (15.0%), 3 (14.4%), 2 (11.8%) and 1b (7.5%). Pregnant women in Lebanon appear to have a relatively high prevalence of GBS colonization with no identifiable risk factors for its acquisition. These results could provide basis for the institution of a national policy for universal maternal GBS screening to reduce neonatal morbidity and mortality.

Publication types

  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Chi-Square Distribution
  • Cross-Sectional Studies
  • Female
  • Fetal Membranes, Premature Rupture / epidemiology
  • Humans
  • Incidence
  • Infant, Newborn
  • Infectious Disease Transmission, Vertical
  • Lebanon / epidemiology
  • Mass Screening*
  • Neonatal Screening
  • Obstetric Labor, Premature / epidemiology
  • Pregnancy
  • Pregnancy Complications, Infectious / epidemiology*
  • Pregnancy Outcome
  • Prevalence
  • Risk Factors
  • Serotyping
  • Streptococcal Infections / epidemiology*
  • Streptococcus agalactiae / classification*
  • Surveys and Questionnaires