Exclusive breastfeeding for at least three months may lessen the effect of antibiotic use during labor and delivery on an infant’s microbiome. Cesarean delivery and antibiotic use during vaginal or C-section childbirth decreases diversity of an infant’s microbiome [1, 2]. However, a study by Azad et al. suggests that exclusive breastfeeding for at least three months may lessen the effect of maternal use of antibiotics during labor and delivery on the microbiome [3]. Breastfeeding may repair the infant microbiome after antibiotic use. Birth is a key time for beneficial microbes to be transmitted from mother to infant, especially during vaginal birth [1, 4, 5]. However antibiotics that disrupt microbiome transmission may be used during both vaginal and Cesarean section (C-section) deliveries. During childbirth, especially in Canada and the United States, antibiotics may be used for several reasons. In vaginal deliveries, antibiotics are used to prevent transmission of Group B Streptococcus (GBS) transmission to the infant. However, the use of antibiotics for GBS is correlated with increased antibiotic-resistant Escherichia coli infections in infants [6]. Antibiotics may also be given to reduce opportunistic pathogen infections during long labors where the amniotic sac membrane has ruptured. Cesarean section surgeries use antibiotics as