Publications by authors named "N Bastien"
Article Synopsis
- The 2023-2024 influenza epidemic started in week 45, primarily driven by influenza A(H1N1), but by week 14, influenza B/Victoria became the dominant strain as influenza A cases decreased.
- A significant portion of influenza B cases affected younger populations, with over half of detections and nearly half of hospitalizations occurring in children aged 0-19.
- The ongoing discussion about the removal of the influenza B/Yamagata strain from vaccines highlights the need for surveillance to prepare for new seasonal patterns driven by influenza B/Victoria.
Coinciding with the beginning of the coronavirus disease 2019 (COVID-19) pandemic in March 2020, Canadian seasonal influenza circulation was suppressed, which was a trend reported globally. Canada saw a brief and delayed return of community influenza circulation during the spring of the 2021-2022 influenza season. Surveillance for Canada's 2022-2023 seasonal influenza epidemic began in epidemiological week 35 (week starting August 28, 2022) and ended in epidemiological week 34 (week ending August 26, 2023).
View Article and Find Full Text PDFThe Canadian Sentinel Practitioner Surveillance Network reports mid-season 2023/24 influenza vaccine effectiveness (VE) of 63% (95% CI: 51-72) against influenza A(H1N1)pdm09, lower for clade 5a.2a.1 (56%; 95% CI: 33-71) than clade 5a.
View Article and Find Full Text PDFImportance: Respiratory syncytial virus (RSV) is a leading cause of pediatric hospitalizations.
Objective: To describe the epidemiology and burden of RSV-associated hospitalizations among children and adolescents in Canadian tertiary pediatric hospitals from 2017 to 2022, including changes during the COVID-19 pandemic.
Design, Setting, And Participants: This cross-sectional study was conducted during 5 RSV seasons (2017-2018 to 2021-2022) at 13 pediatric tertiary care centers from the Canadian Immunization Monitoring Program Active (IMPACT) program.