Association of COVID vaccinations and treatments with long COVID beyond 6 months: a case-control study on the adult population in a large integrated healthcare system in the United States from 2020 to 2023.

Prev Med Rep · 2025 · PMC12432515 · PMID 40948805

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showed a trendno p-value reported

Patients with four doses showed a trend only for reduced odds of Long COVID compared to those who had no vaccination (OR 0.29; 95 % CI 0.06–1.49) ( Table 2a ).

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