Journal
DIAGNOSTIC MICROBIOLOGY AND INFECTIOUS DISEASE
Volume 74, Issue 4, Pages 343-348Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.diagmicrobio.2012.08.006
Keywords
Staphylococcus aureus; MRSA; Surveillance cultures; Pregnant women; Newborns
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Funding
- Fundacao de Amparo a Pesquisa do Estado de 530 Paulo [FAPESP-2009/08206-1]
- FAPESP [2009/10596-2, 2010/19829-7]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico [CNPq 373195/2010-9]
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The objective was to evaluate the performance of surveillance cultures at various body sites for Staphylococcus aureus colonization in pregnant women and newborns (NB) and the factors associated with nasal colonization. For NB, 4 sites were evaluated: nares, oropharynx, perineum, and umbilical stump (birth, third day, and weekly). For pregnant women, 4 sites during labor: anterior nares, anus, perineum, and oropharynx. Nasally colonized patients were compared with colonized only extranasally. Colonization was 53% of 392 pregnant women (methicillin-resistant S. aureus [MRSA]: 4%) and 47% of 382 NB (MRSA: 9%). For newborn patients, the best body site was the umbilical stump (methicillin-susceptible S. aureus [MSSA]: 64%; MRSA: 68%) and the combination of nares + umbilical (MSSA: 86%; MRSA: 91%). Among pregnant women, the best body site was the anterior nares (MSSA: 59%; MRSA: 67%) and the combination of nares + oropharynx (MSSA: 83%; MRSA: 80%). A smaller number of household members were associated with MRSA carriage in pregnant women (2.2 +/- 0.6 versus 3.6 +/- 1.8; P = 0.04). In conclusion, multiple culture sites are needed. Control programs based on surveillance cultures may be compromised. (C) 2012 Elsevier Inc. All rights reserved.
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