doi:10.1016/j.ejogrb.2020.11.069engSavirón-Cornudella, RicardoVillalba, AnaZapardiel, JavierAndeyro-Garcia, MercedesEsteban Escaño, Luis MarianoPérez López, Faustino RamónSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2) universal screening in gravids during labor and deliveryART-2021-121266Objective To screen pregnant women at risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection during delivery using reverse-transcription polymerase chain reaction (RT-PCR) test and serum immunoglobulin (Ig) testing. Method Between March 31 st and August 31 st of 2020, consecutive pregnant women admitted for labor and delivery in a single hospital were screened for SARS-CoV-2 with nasopharyngeal RT-PCR swab tests and detection of serum IgG and IgM. Results We studied 266 pregnant women admitted for labor and delivery. The prevalence of acute or past SARS-CoV-2 infection was 9.0 %, including (i) two cases with respiratory symptoms of SARS-Co-V-2 infection and positive RT-PCR; (ii) four asymptomatic women with positive RT-PCR without clinical symptoms and negative serological tests between two and 15 weeks later; and (iii) two women with false positive RT-PCR due to technical problems. All newborns of the 6 pregnant women with RT-PCR positive had negative RT-PCR and did not require Neonatal Intensive Care Unit admission. There were eighteen asymptomatic women with positive serological IgG tests and negative RT-PCR. Conclusion In our cohort of gravids, we found 2.2 % of women with positive RT-PRC tests and 6.7 % with positive serological tests during the first wave of the SARS-CoV-2 pandemic.2021http://zaguan.unizar.es/record/10857810.1016/j.ejogrb.2020.11.069http://zaguan.unizar.es/record/108578oai:zaguan.unizar.es:108578European Journal of Obstetrics and Gynecology and Reproductive Biology 256 (2021), 400-404by-nc-ndhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccess