Maternal-neonatal outcome with Staphylococcus aureus rectovaginal colonization.
OBJECTIVE
To estimate prevalence of rectovaginal colonization by Staphylococcus aureus among pregnant women with group B streptococcus (GBS) screening results and its association with maternal and infant outcomes.


METHODS
Cultures that detected both group B streptococcus (GBS) and S. aureus were obtained at > or = 35 weeks of gestation. Computerized database search and chart review determined invasive neonatal infection and maternal outcomes at the time of delivery through 6 months postpartum.


RESULTS
A total of 6,626 GBS screening cultures met study criteria, and 769 (11.6%) GBS isolates and 67 (1.0%) S. aureus were identified. No maternal S. aureus-related outcomes were found. The rate of maternal methicillin-resistant S. aureus colonization was 0.1% (7 in 6,626). GBS-positive patients were twice as likely to be colonized with methicillin-susceptible S. aureus than GBS-negative patients. GBS-positive culture rates differed significantly by primary language: Spanish 10.0%, English 13.7%, Russian 26.9%, Cantonese 13.2%, Mandarin 11.5%, Arabic 15.9%, and other 17.8%.


CONCLUSIONS
In our population, S. aureus colonization percentage (1.0%) was lower than the 7.5-8.2% reported by other medical centers, as was overall GBS carriage rate. S. aureus did not predispose to maternal or infant morbidity or mortality up to 6 months postpartum.
Department of Obstetrics and Gynecology, Lutheran Medical Center, 150 55th Street, Brooklyn, NY 11220, USA.
Nibal
N
Ghanim
Omrou
O
Alchyib
Donald
D
Morrish
David
D
Tompkins
Kell
K
Julliard
Ernest
E
Visconti
Iffath A
IA
Hoskins
D000328:Adult; D002353:Carrier State / Q000175:diagnosis / Q000453:epidemiology / Q000628:therapy; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D018445:Infectious Disease Transmission, Vertical; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000175:diagnosis / Q000453:epidemiology* / Q000628:therapy; D011296:Prenatal Diagnosis; D015995:Prevalence; D012007:Rectum; D012189:Retrospective Studies; D013203:Staphylococcal Infections / Q000175:diagnosis* / Q000453:epidemiology* / Q000628:therapy; D013211:Staphylococcus aureus; D013290:Streptococcal Infections / Q000175:diagnosis / Q000453:epidemiology / Q000628:therapy; D013292:Streptococcus agalactiae; D014621:Vagina; D055815:Young Adult