Recent Canadian surveillance data reveals striking epidemiological trends in pediatric influenza following the pandemic period. The 2022–2023 season documented a nearly twofold increase in pediatric influenza hospitalizations compared to 2021–2022, marking a sharp departure from pandemic-suppressed activity levels. Concurrent with this surge, researchers observed a demographic shift toward hospitalization of older children, a pattern distinct from pre-pandemic norms. However, severity metrics present a nuanced picture: while indicators improved from 2021–2022 levels, they have not yet returned to pre-pandemic baselines. This data suggests that although transmission has rebounded substantially, host immunity factors and clinical outcomes may be evolving differently than anticipated. These findings underscore the importance of continued surveillance to monitor influenza trends and inform vaccination strategies. Read the full article on GMJ Newsroom.
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