Objective: To determine whether any association exists between exposure to 2009 pandemic H1N1 (pH1N1) influenza vaccination during pregnancy and negative health outcomes in early childhood.
Design: Retrospective cohort study.
Setting: Population based birth registry linked with health administrative databases in the province of Ontario, Canada.
Participants: All live births from November 2009 through October 2010 (n=104 249) were included, and children were followed until 5 years of age to ascertain study outcomes.
Main Outcome Measures: Rates of immune related (infectious diseases, asthma), non-immune related (neoplasms, sensory disorders), and non-specific morbidity outcomes (urgent or inpatient health services use, pediatric complex chronic conditions) were evaluated from birth to 5 years of age; under-5 childhood mortality was also assessed. Propensity score weighting was used to adjust hazard ratios, incidence rate ratios, and risk ratios for potential confounding.
Results: Of 104 249 live births, 31 295 (30%) were exposed to pH1N1 influenza vaccination in utero. No significant associations were found with upper or lower respiratory infections, otitis media, any infectious diseases, neoplasms, sensory disorders, urgent and inpatient health services use, pediatric complex chronic conditions, or mortality. A weak association was observed between prenatal pH1N1 vaccination and increased risk of asthma (adjusted hazard ratio 1.05, 95% confidence interval 1.02 to 1.09) and decreased rates of gastrointestinal infections (adjusted incidence rate ratio 0.94, 0.91 to 0.98). These results were unchanged in sensitivity analyses accounting for any potential differential healthcare seeking behavior or access between exposure groups.
Conclusions: No associations were observed between exposure to pH1N1 influenza vaccine during pregnancy and most five year pediatric health outcomes. Residual confounding may explain the small associations observed with increased asthma and reduced gastrointestinal infections. These outcomes should be assessed in future studies.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6614795 | PMC |
| http://dx.doi.org/10.1136/bmj.l4151 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Aim: The aim of this study is to investigate the effect of obesity on the treatment outcomes of lumbar transforaminal epidural steroid injections (TFESIs).
Material And Methods: This retrospective study included patients who underwent single-level TFESI in a pain management center between January 2021 and April 2023. Body mass index (BMI) of the patients was evaluated based on the World Health Organization guidelines.
Trends, Characteristics and Outcomes in Breast Cancer Survivors With STEMI.
Angiology
January 2025
Department of Internal Medicine, Texas Tech University Health Science Center, El Paso, TX, USA.
Breast cancer is the most common malignancy among women. While advances in detection and treatment have improved survival, breast cancer survivors face an increased risk of cardiovascular disease. However, limited data exist on cardiac outcomes after ST-elevation myocardial infarction (STEMI) in this population.
View Article and Find Full Text PDFHigh-risk pregnant women's perceptions of their condition: A qualitative study with an emphasis on psychosocial need.
Transcult Psychiatry
January 2025
Ribeirão Preto College of Nursing, University of São Paulo, Ribeirao Preto, Brazil.
This qualitative study was carried out with 30 high-risk pregnant women from a Brazilian referral service in women's health. The objective was to analyze the perception of participants regarding their condition, emphasizing their psychosocial needs, to deepen the understanding of subjective, relational, and sociocultural aspects associated with high-risk pregnancy. Data were collected through interviews and participant observation and then explored by thematic content analysis.
View Article and Find Full Text PDFUniversal Hydrogel Carrier Enhances Bone Graft Success: Preclinical and Clinical Evaluation.
Adv Healthc Mater
January 2025
School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia.
Orthopedic, maxillofacial, and complex dentoalveolar bone grafting procedures that require donor-site bone harvesting can be associated with post-surgical complications. There has been widespread adoption of exogenously sourced particulate bone graft materials (BGM) for bone regenerative procedures; however, the particulate nature of these materials may lead to compromised healing outcomes, mainly attributed to structural collapse of the BGM, prolonged tissue healing. In this study, a fully synthetic thermoresponsive hydrogel-based universal carrier matrix (TX) that forms flowable and shapable putties with different BGMs while spatially preserving the particles in a 3D scaffold at the implantation site is introduced.
View Article and Find Full Text PDFIs videoconference pulmonary rehabilitation associated with improvements in knowledge in people living with COPD? A propensity-matched service-evaluation.
Chron Respir Dis
January 2025
Brunel University London, College of Health Medicine and Life Sciences, London, UK.
Pulmonary rehabilitation (PR) services are increasingly using alternative programme delivery modes, for example telerehabilitation strategies including videoconferencing, to improve patient choice and accessibility. Although telerehabilitation results in improvements in core outcomes, the effect on knowledge attainment is not known. To observe the real-world responses of patients choosing to undergo videoconference PR to a matched control group choosing to undergo in-person PR, in terms of knowledge attainment.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!