The effect of the separation of mother-preterm newborn infants hospitalized during the COVID-19 pandemic on maternal depression and stress levels, infant development, and bonding quality on Chilean dyads.

Early infant development is a maturation process critically depends on the infant's interaction with primary caregivers. Hence, neonatal units prioritize their proximity. In COVID-19, parental visitation hours were limited, reducing caregivers time with their infants. This follow-up study analyzes and compares levels of maternal depression and stress, infant development, and bonding quality in preterm mother-infant dyads hospitalized, before and during the pandemic. Out of 66 dyads participated, 36 were admitted before COVID-19, and 30 during COVID-19. The assessed was two video-call sessions in which mothers completed selected questionnaires. No significant differences between mothers' levels of depression and stress. However, low birth weight was associated with greater difficulties in children's communication and interpersonal relationships. Furthermore, infants hospitalized in COVID-19 had a higher risk of experiencing delayed communication. No significant differences were observed in bonding quality. Lower infant gestational age and longer breastfeeding time were associated with better bonding quality in both groups. Psychosocial intervention is considered a valuable tool, capable of preventing maternal mental health difficulties and protecting bonding in premature infants and in highly complex healthcare settings. Nevertheless, it is essential to more actively address the socio-affective needs of newborns during their hospital stay to promote adequate development.