This is a cross sectional study conducted in Hospital San Juan de Dios, Santiago of Chile. This Hospital attends nearly 4500 births every year. When the COVID-19 pandemia came to Chile, there was no possibility to assess the seroconversion for SARS-Cov2. Currently, it remains unclear the seroprevalence of SARS-Cov-2 in pregnant near to delivery in our country, also its correlation with clinical, perinatal outcomes and sociodemographic characteristics. The project will evaluate these features, collecting nasopharyngeal swab serology in a systematic manner in unselected pregnant women on labor (or a predictable delivery during next 24 hours). Maternal information including clinical data, obstetric history, comorbidities and sociodemographic characteristics acquired from medical records will be correlated to the seroconversion.
