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Approximately 10–30% of women are colonized with GBS during pregnancy. Nevertheless, during pregnancy, colonization can be temporary, intermittent, or continual. [12] Because of this the GBS colonization status of women can change during pregnancy, only cultures carried out ≤5 weeks before delivery and predict quite accurately the GBS ...
Streptococcus agalactiae (also known as group B streptococcus or GBS) is a gram-positive coccus (round bacterium) with a tendency to form chains (as reflected by the genus name Streptococcus). It is a beta- hemolytic , catalase -negative, and facultative anaerobe .
Streptococcus is a genus of gram-positive or spherical bacteria that belongs to the family Streptococcaceae, within the order Lactobacillales (lactic acid bacteria), in the phylum Bacillota. [2] Cell division in streptococci occurs along a single axis , thus when growing they tend to form pairs or chains, which may appear bent or twisted.
Group B streptococcus (GBS), also named Streptococcus agalactiae, is a bacteria typically identified as the cause of the majority of early-onset infections in the neonate. GBS is an encapsulated gram-positive cocci that colonizes the gastrointestinal and genital tracts of pregnant women. Maternal infections are usually asymptomatic.
“It is probably related to some of the physiological changes associated with pregnancy and the postpartum period," Hall says. Having flu-like symptoms can be a sign of a strep A infection.
Hafner E, Sterniste W, Rosen A, et al. Group B streptococci during pregnancy: a comparison of two screening and treatment protocols. Am J Obstet Gynecol 1998; 179:677--81. ^ Antimicrobial prevention of early-onset group B streptococcal sepsis: estimates of risk reduction based on a critical literature review Benitz WE, Gould JB, Druzin ML ...
Vaginal screening for GBS is performed between 34 and 37 weeks of gestational age, so that mothers that are positive for the bacterium can receive treatment before delivery. During the third trimester, some institutions may require evaluations of hemoglobin/hematocrit, syphilis serology, and HIV screening.
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