She could delay the baby's bath and leave the protective vernix and amniotic fluid on the baby. 

Tricia Shamblin, RN, IBCLC  

ANTIMICROBIAL PROPERTIES OF AMNIOTIC FLUID AND VERNIX CASEOSA ARE SIMILAR TO THOSE FOUND IN BREAST MILK
  
  - Akinbi, H. T., Narendran, V., Pass, A. K., Markart, P., & Hoath, S. B. (2004). Host defense proteins in vernix caseosa and amniotic fluid. American Journal of Obstetrics and Gynecology, 191(6), 2090–2096.
SummaryIn this study, researchers analyzed samples of amniotic fluid and vernix caseosa (vernix) from healthy, term gestations to determine the immune properties of these substances. Participants were pregnant women admitted for elective cesarean section after 37 weeks gestation with no prior labor and no signs of chorioamnionitis (intrauterine infection). Women with a history of prenatal fever or premature rupture of membranes, or who received steroids prenatally or antibiotics while giving birth were excluded, as were women whose babies passed meconium in utero, had congenital malformations, or required prolonged resuscitation after birth. Amniotic fluid was obtained by amniocentesis to determine fetal lung maturity prior to elective birth. Vernix was gently scraped from the newborn's skin with a sterile implement immediately following birth. The researchers obtained 10 samples of amniotic fluid and 25 samples of vernix.Tests (Western analysis and immunochemistry) revealed that lysozyme, lactoferrin, human neutrophil peptides 1–3, and secretory leukocyte protease inhibitor were present in the amniotic fluid samples and in organized granules embedded in the vernix samples. These immune substances were tested using antimicrobial growth inhibition assays and found to be effective in inhibiting the growth of common perinatal pathogens, including group B. Streptococcus, K. pneumoniae, L. monocytogenes, C. albicans, and E. coli.

The results of this study also call into question the routine use of some newborn procedures. Early bathing of the baby removes vernix, which contains antimicrobial proteins that are active against group B. streptococcus and E. coli. Delaying the bath and keeping the newborn together with his or her mother until breastfeeding is established may prevent some cases of devastating infections caused by these bacteria. The fact that preterm babies tend to have more vernix than babies born at or after 40 weeks might mean that healthy, stable preterm babies derive even greater benefit from staying with their mothers during the postpartum period.
  

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