ArticleBJOG : an international journal of obstetrics and gynaecology2022
Pregnancy and risk of COVID-19: a Norwegian registry-linkage study.
Article in BJOG : an international journal of obstetrics and gynaecology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 2 of them syntheses that pooled it.
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Who cites it
32 citing papers in PubMed, 2 syntheses or guidelines pooled it, 52 citations in OpenAlex.
- Early suppression policies protected pregnant women from COVID-19 in 2020: A population-based surveillance from the Nordic countries.Acta obstetricia et gynecologica Scandinavica · 2024Pooled it
- Clinical manifestations, risk factors, and maternal and perinatal outcomes of coronavirus disease 2019 in pregnancy: living systematic review and meta-analysis.BMJ (Clinical research ed.) · 2020Pooled it
- Preparedness for maternal and offspring health surveillance in pandemics: Lessons learned from studies on COVID-19 using Scandinavian registry data.Acta obstetricia et gynecologica Scandinavica · 2026Article
- COVID-19 and Pregnancy: Key Findings.Scandinavian journal of immunology · 2026Review
- Postpartum hemorrhage after SARS-CoV-2 infection in pregnancy: A Scandinavian register-based cohort study.Acta obstetricia et gynecologica Scandinavica · 2025Article
- First-Trimester mRNA COVID-19 Vaccination and Risk of Major Congenital Anomalies.JAMA network open · 2025Article
- Bridging Knowledge Gaps in Understanding SARS-CoV-2 Infection During Pregnancy.Paediatric and perinatal epidemiology · 2025Article
- Incidence, Risk Factors and Outcomes of SARS-CoV-2 Infection in Pregnant Women: The COROPREG Population-Based Study.Paediatric and perinatal epidemiology · 2025Article
- COVID-19 infection increases the risk of venous thromboembolism during pregnancy and the postpartum period.European journal of epidemiology · 2025Article
- COVID-19 vaccine updates for people under different conditions.Science China. Life sciences · 2024Review
- Covid-19 vaccination and menstrual bleeding disturbances among women of fertile age: a Norwegian registry study.European journal of epidemiology · 2024Article
- Covid-19 infection and vaccination during first trimester and risk of congenital anomalies: Nordic registry based study.BMJ (Clinical research ed.) · 2024Article
- A Registry-Based Observational Study on the Maternal and Fetal Outcomes of COVID-19 Patients in Hong Kong.Maternal-fetal medicine (Wolters Kluwer Health, Inc.) · 2024Article
- Perinatal outcomes after admission with COVID-19 in pregnancy: a UK national cohort study.Nature communications · 2024Article
- Effectiveness of COVID-19 vaccination during pregnancy by circulating viral variant.AJOG global reports · 2023Article
- Using the COM-B framework to elucidate facilitators and barriers to COVID-19 vaccine uptake in pregnant women: a qualitative study.BMC pregnancy and childbirth · 2023Article
- Individual and neighborhood factors associated with being unvaccinated against COVID-19 among pregnant persons.Human vaccines & immunotherapeutics · 2023Article
- Addressing the Urgent Need for Education Around Cardiovascular Complications of COVID-19 Among Unvaccinated Pregnant Patients.JACC. Advances · 2023Article
- Severe COVID-19 during pregnancy in Sweden, Norway, and Denmark.Acta obstetricia et gynecologica Scandinavica · 2023Article
- Pregnancy and COVID-19: past, present and future.Obstetrics & gynecology science · 2023Article
Corrections and comments
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Authors and funding
9 authors at 3 institutions in 4 countries.
Funding
Abstract
objectiveTo compare the risk of acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and contact with specialist healthcare services for coronavirus disease 2019 (COVID-19) between pregnant and non-pregnant women. POPULATION OR SAMPLE: All women ages 15-45 living in Norway on 1 March 2020 (n = 1 033 699).
methodsWe linked information from the national birth, patient, communicable diseases and education databases using unique national identifiers.
main outcome measureWe estimated hazard ratios (HR) among pregnant compared to non-pregnant women of having a positive test for SARS-CoV-2, a diagnosis of COVID-19 in specialist healthcare, or hospitalisation with COVID-19 using Cox regression. Multivariable analyses adjusted for age, marital status, education, income, country of birth and underlying medical conditions.
resultsPregnant women were not more likely to be tested for or to a have a positive SARS-CoV-2 test (adjusted HR 0.99; 95% CI 0.92-1.07). Pregnant women had higher risk of hospitalisation with COVID-19 (HR 4.70, 95% CI 3.51-6.30) and any type of specialist care for COVID-19 (HR 3.46, 95% CI 2.89-4.14). Pregnant women born outside Scandinavia were less likely to be tested, and at higher risk of a positive test (HR 2.37, 95% CI 2.51-8.87). Compared with pregnant Scandinavian-born women, pregnant women with minority background had a higher risk of hospitalisation with COVID-19 (HR 4.72, 95% CI 2.51-8.87).
conclusionPregnant women were not more likely to be infected with SARS-CoV-2. Still, pregnant women with COVID-19, especially those born outside of Scandinavia, were more likely to be hospitalised. TWEETABLE ABSTRACT: Pregnant women are at increased risk of hospitalisation for COVID-19.
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