Severity of COVID-19 Omicron Variants: A Global Systematic Review.

Infect Dis Ther · 2026 · PMC13280279 · PMID 42144508

Europe PMC DOI

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a mild trendno p-value reported

For example, in a 2025 retrospective database study including 130,263 US veterans, authors reported a mild trend for decline in risk of hospitalization odds for JN.1 and KP compared to XBB, (September 2023–October 2024) [ 45 ].

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