Introduction: Streptococcus agalactiae, currently known as group B streptococcus (GBS)is the main microorganism that colonizes the genitourinary tract in pregnant women,causing serious consequences in the neonate, such as neonatal sepsis, pneumonia,and meningitis. Objective: To determine the prevalence of GBS in pregnant women atthe Dr. Mario Catarino Rivas National Hospital in Honduras. Materials and methods:Descriptive, prospective, cross-sectional study. A total of 143 pregnant womenbetween 34-40 weeks of gestation attended at the gynecology and obstetrics serviceof the Dr. Mario Catarino Rivas National Hospital in Honduras from January 2020to June 2021 were enrolled. Cultures were developed following the methodologyrecommended by the Centers for Disease Control and Prevention and Strepto BchromID agar was added. Descriptive statistics were used for analysis. Results: Themean age of t...