Factors affecting the impact of COVID-19 vaccination on post COVID-19 conditions among adults: A systematic literature review
This systematic literature review summarizes the evidence across 56 publications and pre-prints (January 2020–July 2023) with low-risk of bias based on JBI critical appraisal, that report adjusted estimates for the relationship between COVID-19 vaccination and Post-COVID-19 Condition (PCC) by timing...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2025-12-01
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| Series: | Human Vaccines & Immunotherapeutics |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/21645515.2025.2474772 |
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| Summary: | This systematic literature review summarizes the evidence across 56 publications and pre-prints (January 2020–July 2023) with low-risk of bias based on JBI critical appraisal, that report adjusted estimates for the relationship between COVID-19 vaccination and Post-COVID-19 Condition (PCC) by timing of vaccination relative to infection or PCC-onset. Comparisons of adjusted vaccine effectiveness (aVE) against ≥1 PCC (vs. unvaccinated) across study characteristics known to impact PCC burden or VE against other COVID-19 endpoints were possible for 31 studies where vaccination preceded infection. Seventy-seven percent of pre-infection aVE estimates were statistically significant (range: 7%–95%). Statistically significant pre-infection aVE estimates were slightly higher for mRNA (range: 14%–84%) than non-mRNA vaccines (range: 16%–38%) and aVE ranges before and during Omicron overlapped. Our findings suggest that COVID-19 vaccination before SARS-CoV-2 infection reduces the risk of PCC regardless of vaccine type, number of doses received, PCC definition, predominant variant, and severity of acute infections included. |
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| ISSN: | 2164-5515 2164-554X |