Maternal and perinatal outcomes following pre-Delta, Delta, and Omicron SARS-CoV-2 variants infection among unvaccinated pregnant women in France and Switzerland: a prospective cohort study using the COVI-PREG registry

Estimates of SARS-CoV-2 Omicron Variant Severity in Ontario, Canada

(2022) Ana Cecilia Ulloa et al.   JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION

Omicron severity: milder but not mild

(2022) Joshua Nealon et al.   LANCET

Early assessment of the clinical severity of the SARS-CoV-2 omicron variant in South Africa: a data linkage study

(2022) Nicole Wolter et al.   LANCET

Maternal and perinatal outcomes of SARS‐CoV ‐2 infection in unvaccinated pregnancies during Delta and Omicron waves

(2022) P. Birol Ilter et al.   ULTRASOUND IN OBSTETRICS & GYNECOLOGY

Systematic review and meta-analysis of the effectiveness and perinatal outcomes of COVID-19 vaccination in pregnancy

(2022) Smriti Prasad et al.   Nature Communications

Clinical severity of COVID-19 in patients admitted to hospital during the omicron wave in South Africa: a retrospective observational study

(2022) Waasila Jassat et al.   Lancet Global Health

Effectiveness of COVID-19 vaccination against SARS-CoV-2 Infection among Residents of US Nursing Homes, Before and During the Delta variant Predominance, December 2020 – November 2021

(2022) Kelly M Hatfield et al.   CLINICAL INFECTIOUS DISEASES

Third trimester placentitis: an underreported complication of SARS-CoV-2 infection

(2022) Joanna Sichitiu et al.   American Journal of Obstetrics & Gynecology MFM

Higher SARS-CoV-2 Infection Rate in Pregnant Patients

(2021) Erica M. LOKKEN et al.   AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY

Maternal and Neonatal Morbidity and Mortality Among Pregnant Women With and Without COVID-19 Infection

(2021) José Villar et al.   JAMA Pediatrics

Increasing severity of COVID-19 in pregnancy with Delta (B.1.617.2) variant surge

(2021) Emily H. Adhikari et al.   AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY

Hospital admission and emergency care attendance risk for SARS-CoV-2 delta (B.1.617.2) compared with alpha (B.1.1.7) variants of concern: a cohort study

(2021) Katherine A Twohig et al.   LANCET INFECTIOUS DISEASES

SARS-CoV-2 Vaccine Willingness among Pregnant and Breastfeeding Women during the First Pandemic Wave: A Cross-Sectional Study in Switzerland

(2021) Sarah Stuckelberger et al.   Viruses-Basel

Maternal outcomes and risk factors for COVID-19 severity among pregnant women

(2021) Manon Vouga et al.   Scientific Reports

Interim Estimates of COVID-19 Vaccine Effectiveness Against COVID-19–Associated Emergency Department or Urgent Care Clinic Encounters and Hospitalizations Among Adults During SARS-CoV-2 B.1.617.2 (Delta) Variant Predominance — Nine States, June–August 2021

(2021) Shaun J. Grannis et al.   MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT

Characteristics and Outcomes of Hospitalized Patients in South Africa During the COVID-19 Omicron Wave Compared With Previous Waves

(2021) Caroline Maslo et al.   JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION

Increased risk of hospitalisation and death with the delta variant in the USA

(2021) Elizabeth Bast et al.   LANCET INFECTIOUS DISEASES

Severity of SARS-CoV-2 Reinfections as Compared with Primary Infections

(2021) Laith J. Abu-Raddad et al.   NEW ENGLAND JOURNAL OF MEDICINE

Decreased Fetal Movements: A Sign of Placental SARS-CoV-2 Infection with Perinatal Brain Injury

(2021) Guillaume Favre et al.   Viruses-Basel

Severity of Illness in Persons Infected With the SARS-CoV-2 Delta Variant vs Beta Variant in Qatar

(2021) Adeel A. Butt et al.   JAMA Internal Medicine

An international registry for emergent pathogens and pregnancy

(2020) Alice Panchaud et al.   LANCET

Change in the Incidence of Stillbirth and Preterm Delivery During the COVID-19 Pandemic

(2020) Asma Khalil et al.   JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION

Clinical manifestations, risk factors, and maternal and perinatal outcomes of coronavirus disease 2019 in pregnancy: living systematic review and meta-analysis

(2020) John Allotey et al.   BMJ-British Medical Journal

Viral Infections During Pregnancy

(2015) Michelle Silasi et al.   AMERICAN JOURNAL OF REPRODUCTIVE IMMUNOLOGY

Postnatal growth standards for preterm infants: the Preterm Postnatal Follow-up Study of the INTERGROWTH-21 st Project

(2015) José Villar et al.   Lancet Global Health