Article

Increased burden of influenza A/H1N1pdm09 in older adults following the COVID-19 pandemic

2026-05-28

Abstract excerpt

Of the two influenza A virus (IAV) subtypes circulating endemically in humans, A/H3N2 and A/H1N1pdm09, A/H3N2 has historically been the dominant driver of disease burden in older adults. Based on an analysis of publicly available global surveillance data from 2015 to 2025 (>300,000 subtyped, age-stratified infections), we report a substantially increased contribution of A/H1N1pdm09 to influenza morbidity in older...

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Literature Corpus work: a6406ce7-e286-5d11-8b45-3b7c2a19b925
DOI: 10.64898/2026.05.20.26353664

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