Opondo C, et al. - Given that in England and Wales, although relatively low risks of adverse birth outcomes have been reported, there is variation across ethnic groups, researchers here investigated how mother’s country of birth influence the birth outcomes across ethnic groups using a large population-based linked data set. They assessed a cohort of 4.6 million singleton live births in England and Wales and identified the crude neonatal and infant death risks of 2.1 and 3.2 per 1,000, respectively, the crude preterm birth risk of 5.6% and the crude mean birth weight of 3.36 kg. Evidence gained suggested better birth outcomes among UK-born infants of non-UK-born minority ethnic group mothers. Slightly lower gestational age-adjusted mean birth weights were reported for White British infants of non-UK-born mothers vs White British infants of UK-born mothers. Lower adjusted risks of neonatal death, infant death, and preterm birth were observed for Pakistani infants of Pakistan-born mothers vs Pakistani infants of UK-born Pakistani mothers. The lower adjusted preterm birth risk was observed for Indian infants of India-born mothers vs Indian infants of UK-born Indian mothers. Among Black infants, no evidence of a difference by mother’s country of birth in the risk of birth outcomes was noted, except Black Caribbean infants of mothers born in neither the UK nor their region of origin, who had higher neonatal death risks.