ArticleThe Journal of infection2018
Impact of influenza on outpatient visits and hospitalizations among pregnant women in Catalonia, Spain.
Article in The Journal of infection, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
5 citing papers in PubMed, 12 citations in OpenAlex.
- Heterogeneity in seasonal influenza vaccination opportunity and disease risk during pregnancy and in infants <6 months.Vaccine · 2025Article
- Cost-effectiveness of seasonal influenza vaccination in WHO-defined high-risk populations in Bangladesh.Journal of global health · 2024Article
- An international cohort study of birth outcomes associated with hospitalized acute respiratory infection during pregnancy.The Journal of infection · 2020Article
- Global Perspectives on Immunization During Pregnancy and Priorities for Future Research and Development: An International Consensus Statement.Frontiers in immunology · 2020Review
- Impact of a poorly performing point-of-care test during the 2017-2018 influenza season.The Journal of infection · 2019Article
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Authors and funding
4 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo estimate outpatient visits and hospitalization rates due to cardiopulmonary illness attributable to influenza from 2008-09 to 2012-13 in a large cohort of pregnant women from Catalonia, Spain.
methodsWe estimated the event rates occurring during influenza epidemic, influenza non-epidemic and non-influenza seasons, and by pregnancy status (one year before pregnancy, first, second and third trimester). We fitted quasi-Poisson models in order to identify the variables associated to higher event rates.
resultsDuring influenza epidemic seasons, pregnant women in their second trimester had the highest rates of outpatient visits (153 per 10,000 women-months). An increased risk of outpatient visits was associated to first or second trimester (adjusted rate ratio (aRR) = 1.17; 95% CI, 1.10-1.23 and aRR, 1.36; 95% CI, 1.28-1.43, respectively) and having any comorbidity (aRR = 1.28; 95% CI, 1.21-1.36). Women during third trimester had the highest rates of hospitalizations (1.60 per 10,000 women-months), and an increased risk of hospitalization was significantly associated to third trimester (aRR, 1.85; 95% CI, 1.01-3.39), having any comorbidity (aRR, 1.93; 95% CI, 1.10-3.41) and the pandemic influenza season (aRR, 2.90 (1.81; 95% CI, 1.81-4.64).
conclusionOur findings provide significant information regarding influenza burden of disease among pregnant women.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.