Impact of COVID-19 vaccination and vaccine type on morbidity and mortality in hospitalized patients: a retrospective cohort study in Egypt
COVID-19 vaccination was associated with improved clinical outcomes, reduced disease severity, and lower mortality among hospitalized patients. Disease severity and comorbidity burden were the strongest predictors of survival. No significant differences were observed among vaccine types in clinical outcomes. These findings support the protective role of COVID-19 vaccination in reducing severe disease and mortality.
Authors
- Nehal Mohamed Eisa (ORCID: https://orcid.org/0000-0001-9288-1826)
- Haidy M. Sami
- Seif El Hadidi (ORCID: https://orcid.org/0000-0002-0534-3809)
- Hayam Ali AlRasheed (ORCID: https://orcid.org/0009-0002-6186-848X)
- Heba Khaled (ORCID: https://orcid.org/0000-0002-7609-2349)
- Mostafa M. Bahaa (ORCID: https://orcid.org/0000-0003-3332-4573)
- Marwa M. Gaballah
- Shrouq Sayed Abdelrazik
- Heba Salama
- Nourhan M. Kamal
- Abdelrahman S. H. Refaee
- Reem S. Mahmoud
- Mostafa Ahmed
- Ahmed Essam Abou Warda
- Rana A. Hussein
- Ramy M. El Sabaa
Institutions
- Princess Nourah bint Abdulrahman University (SA)
- Cairo University (EG)
- Mansoura University (EG)
- National University of Pharmacy (UA)
- Life Care Institute of Medical Sciences & Research (IN)
- Memorial Foundation (US)
- Health Affairs (US)
- Al Azhar University (QA)
- October 6 University (EG)
- Menoufia University (EG)
- Port Said University (EG)
- Delta University for Science and Technology (EG)
Publication Details
- Journal
- Frontiers in Microbiology
- Published
- 2026-02-27
- DOI
- https://doi.org/10.3389/fmicb.2026.1792503
- Primary Topic
- SARS-CoV-2 and COVID-19 Research
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Princess Nourah Bint Abdulrahman University