RT Journal Article T1 The association between SARS-CoV-2 infection and preterm delivery: a prospective study with a multivariable analysis. A1 Martinez-Perez, Oscar A1 Prats-Rodriguez, Pilar A1 Muner-Hernandez, Marta A1 Encinas-Pardilla, Maria Begoña A1 Perez-Perez, Noelia A1 Vila-Hernandez, Maria Rosa A1 Villalba-Yarza, Ana A1 Nieto-Velasco, Olga A1 Del-Barrio-Fernandez, Pablo Guillermo A1 Forcen-Acebal, Laura A1 Orizales-Lago, Carmen Maria A1 Martinez-Varea, Alicia A1 Muñoz-Abellana, Begoña A1 Suarez-Arana, Maria A1 Fuentes-Ricoy, Laura A1 Martinez-Diago, Clara A1 Janeiro-Freire, Maria Jesus A1 Alférez-Alvarez-Mallo, Macarena A1 Casanova-Pedraz, Cristina A1 Alomar-Mateu, Onofre A1 Lesmes-Heredia, Cristina A1 Wizner-de-Alva, Juan Carlos A1 Bernardo-Vega, Rut A1 Macia-Badia, Montserrat A1 Alvarez-Colomo, Cristina A1 Sanchez-Muñoz, Antonio A1 Pratcorona-Alicart, Laia A1 Alonso-Saiz, Ruben A1 Lopez-Rodriguez, Monica A1 Del-Carmen-Barbancho-Lopez, Maria A1 Meca-Casbas, Marta Ruth A1 Vaquerizo-Ruiz, Oscar A1 Moran-Antolin, Eva A1 Nuñez-Valera, Maria Jose A1 Fernandez-Fernandez, Camino A1 Tubau-Navarra, Albert A1 Cano-Garcia, Alejandra Maria A1 Baena-Luque, Carmen A1 Soldevilla-Perez, Susana A1 Gastaca-Abasolo, Irene A1 Adanez-Garcia, Jose A1 Teulon-Gonzalez, Maria A1 Puertas-Prieto, Alberto A1 Ostos-Serna, Rosa A1 Del-Pilar-Guadix-Martin, Maria A1 Catalina-Coello, Monica A1 Ferriols-Perez, Elena A1 Caño-Aguilar, Africa A1 De-la-Cruz-Conty, Maria Luisa A1 Sainz-Bueno, Jose Antonio K1 COVID-19 K1 Coronavirus K1 Intensive care units, neonatal K1 Pregnancy K1 Premature birth K1 Premature rupture of membranes K1 SARS-CoV-2 K1 Área de Gestión Sanitaria de Jerez, Costa Noroeste y Sierra de Cádiz K1 Area de Gestión Sanitaria Sur de Córdoba K1 Área de Gestión Sanitaria Sur de Sevilla AB To determine whether severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2, the cause of COVID-19 disease) exposure in pregnancy, compared to non-exposure, is associated with infection-related obstetric morbidity. We conducted a multicentre prospective study in pregnancy based on a universal antenatal screening program for SARS-CoV-2 infection. Throughout Spain 45 hospitals tested all women at admission on delivery ward using polymerase-chain-reaction (PCR) for COVID-19 since late March 2020. The cohort of positive mothers and the concurrent sample of negative mothers was followed up until 6-weeks post-partum. Multivariable logistic regression analysis, adjusting for known confounding variables, determined the adjusted odds ratio (aOR) with 95% confidence intervals (95% CI) of the association of SARS-CoV-2 infection and obstetric outcomes. Preterm delivery (primary), premature rupture of membranes and neonatal intensive care unit admissions. Among 1009 screened pregnancies, 246 were SARS-CoV-2 positive. Compared to negative mothers (763 cases), SARS-CoV-2 infection increased the odds of preterm birth (34 vs 51, 13.8% vs 6.7%, aOR 2.12, 95% CI 1.32-3.36, p = 0.002); iatrogenic preterm delivery was more frequent in infected women (4.9% vs 1.3%, p = 0.001), while the occurrence of spontaneous preterm deliveries was statistically similar (6.1% vs 4.7%). An increased risk of premature rupture of membranes at term (39 vs 75, 15.8% vs 9.8%, aOR 1.70, 95% CI 1.11-2.57, p = 0.013) and neonatal intensive care unit admissions (23 vs 18, 9.3% vs 2.4%, aOR 4.62, 95% CI 2.43-8.94, p  This prospective multicentre study demonstrated that pregnant women infected with SARS-CoV-2 have more infection-related obstetric morbidity. This hypothesis merits evaluation of a causal association in further research. PB BioMed Central YR 2021 FD 2021-04-01 LK http://hdl.handle.net/10668/17435 UL http://hdl.handle.net/10668/17435 LA en NO Martinez-Perez O, Prats Rodriguez P, Muner Hernandez M, Encinas Pardilla MB, Perez Perez N, Vila Hernandez MR, et al. The association between SARS-CoV-2 infection and preterm delivery: a prospective study with a multivariable analysis. BMC Pregnancy Childbirth. 2021 Apr 1;21(1):273 NO This project was supported by public funds obtained in competitive calls: Grant COV20/00021 from the Institute of Health- Carlos III and co-financed with Fondo Europeo de Desarrollo Regional (FEDER) funds. DS RISalud RD Apr 7, 2025