title: Vaginal colonization with invasive Escherichia coli during pregnancy.
abstract: Escherichia coli containing the K1 antigen was isolated from women throughout their pregnancy and at delivery. The number of positive isolations varied from 5% to 7% throughout pregnancy, and 50% of the babies were coloinized if their mothers were positive for this organism at the time of delivery. In contrast to group B streptococci, the spontaneous loss or acquisition of E. coli K1 was uncommon.
mesh_terms: D000942:Antigens, Bacterial / Q000032:analysis; D004927:Escherichia coli Infections / Q000150:complications*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000382:microbiology; D008297:Male; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000382:microbiology*; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third; D014621:Vagina / Q000382:microbiology*
chemical_list: D000942:Antigens, Bacterial