El presente estudio tuvo como objetivo describir los resultados materno-perinatales de gestantes con infección por SARS-CoV-2 identificadas antes del parto, en un hospital nivel III del Perú. Se evaluaron variables sociodemográficas, complicaciones obstétricas y morbilidades neonatales en los nacimientos ocurridos entre el 1 de abril y el 30 de junio de 2020, en el Instituto Nacional Materno Perinatal del Perú. Se registraron 43 recién nacidos, 93% de las madres fueron asintomáticas. Las complicaciones obstétricas más frecuentes fueron rotura prematura de membranas (18,6%) y preeclampsia (11,6%). El 65,1% de nacimientos fue por parto vaginal, solo uno de los recién nacidos presentó resultado positivo a la prueba de reacción en cadena de polimerasa con transcriptasa inversa (RT-PCR) para COVID-19, las comorbilidades de los recién nacidos fueron prematuridad (11,3%), bajo peso al nacer (9,3%), cuatro ingresaron a cuidados intermedios y dos a cuidados intensivos. Se concluye que el 2,4% de los recién nacidos hijos de madres con COVID-19 presentó prueba molecular positiva de RT-PCR, el 14% de recién nacidos presentó morbilidad como prematuridad, bajo peso al nacer, sepsis y neumonía que requirió ventilación. La morbilidad neonatal se encontró en recién nacidos cuya prueba de RT-PCR fue negativa para COVID-19.

Introduction COVID-19 disease affects newborns, but its middle and long-term effects are still unclear. Objective To describe the clinical and epidemiological characteristics and follow-up of newborns infected with SARS-CoV-2. Methods An observational and descriptive study. We included newborns with SARS-CoV-2 positive RT-PCR born from SARS-CoV-2 seropositive mothers. Delivery and newborn care were provided at the 'Instituto Nacional Materno Perinatal' from Peru between June 1 and September 30, 2020. Perinatal information was collected from medical records. Remote follow-up and face-to-face evaluations gathered epidemiological and clinical information, in addition to serological and RT-PCR tests for SARS-CoV-2. Descriptive statistics were used for analysis. Results During the study period, 4733 neonates were born at the institution. We found that 1488 (31.4%) were born from seropositive for SARS-CoV-2 mothers. Finally, we included the 34 (2.3%) newborns with positive RT-PCR for SARS-CoV-2. Regarding the included newborns, 29.4% were delivered by cesarean section, 26.5% had low birth weight, 11.8% were preterm, 26.5% were hospitalized, and one died. Twenty-eight had a remote follow-up, and 18 also had a face-to-face follow-up. A total of 64.3% were exclusively breastfed, 28.6% were mixed breastfed, and 7.1% used a substitute formula. The face-to-face evaluation was performed between one and four months of chronological age. We found that 100% had negative control RT-PCR test for COVID-19, 38.9% had a negative serological test (IgM, IgG), and 61.1% positive IgG. Conclusions Neonatal SARS-CoV-2 infection is rare, and most infected infants are asymptomatic. Vaginal delivery, breastfeeding, and joint isolation did not related with complications during hospital care. Infants under remote and in-person follow-up showed favorable clinical evolution during the study period.

Introduction SARS-CoV-2 has spread rapidly throughout the world. However, its ability to cause severe disease is not homogeneous according to sex and the different age groups. Objective To determine perinatal characteristics, morbidity, mortality, and serological results in neonates from seropositive pregnant women to SARS-CoV2. Methods We did a retrospective, descriptive, cross-sectional study. We included all newborns from positive pregnant women to SARS-CoV-2, between April 15 and May 10, 2020, who delivered in the National Perinatal Maternal Institute of Peru. The study extracted maternal and neonatal variables collected from the medical charts. The data were analyzed using descriptive statistics and Fischer's exact test. Results One hundred fourteen neonates were identified, 36.8% IgM/IgG positive for SARS-CoV-2, 7% IgG, and 56.2% had negative serology. The obstetric complications were premature rupture of membranes (14.9%) and preterm birth (8,8%). 8.8% of newborns had an Apgar score of less than or equal to six minutes, and of those, only one persisted after five minutes; three newborns died. There was an association between the type of maternal immunoglobulin and the serology of the newborn (p < 0.05). No association was observed between perinatal results and maternal immunoglobulin type (p > 0.05) or serological results in the newborn for SARS-CoV-2 (p > 0.05). Conclusion 43.9% of seropositive mothers' neonates to SARS-CoV-2 had a positive serological result, more frequently type IgM/IgG. 10.5% of the neonates had some morbidity, more frequent prematurity, low birth weight, and 2.6% died. Perinatal results were not associated with the type of immunoglobulin of mothers seropositive to SARS CoV-2; similarly, perinatal results were not associated with serological results in the newborn