Solís-García G, Gutiérrez-Vélez A, Pescador Chamorro I, Zamora-Flores E, Vigil-Vázquez S, Rodríguez-Corrales E, Sánchez-Luna M. Epidemiology, management and risk of SARS-CoV-2 transmission in a cohort of newborns born to mothers diagnosed with COVID-19 infection. An Pediatr (Engl Ed). 2021 Mar;94(3):173-178. doi: 10.1016/j.anpede.2020.12.006. Epub 2021 Jan 26. PMID: 33521167; PMCID: PMC7834971.

Introduction: The impact of maternal SARS-CoV-2 infection and its risk of vertical transmission is still not well known. Recommendations from scientific societies seek to provide safety for newborns without compromising the benefits of early contact. The aim of the study is to describe characteristics and evolution of newborns born to mothers with SARS-CoV-2 infection, as well as the implemented measures following recommendations from the Sociedad Española de Neonatología.

Methods: Observational, prospective and single-center cohort study. A specific circuit was designed for mothers with SARS-CoV-2 infection and their newborns. Epidemiological and clinical data were collected. PCR were performed in newborns at delivery and at 14 days of age.

Results: 73 mothers and 75 newborns were included in the study. 95.9% of maternal infections were diagnosed during the third trimester of pregnancy, 43.8% were asymptomatic. Median gestational age was 38 weeks (IQR: 37-40), 25.9% of newborns required admission to Neonatology. Skin-to-skin mother care was performed in 68% of newborns, 80% received exclusive maternal or donated breast milk during hospital stay. No positive PCR results were observed in newborns at delivery, one case of positive PCR was observed in an asymptomatic neonate at 14 days of age.

Conclusions: Risk of SARS-CoV-2 transmission is low when complying to the recommendations issued by Sociedad Española de Neonatología, allowing rooming-in and promoting breastfeeding.