@article{202312.1611, doi = {10.20944/preprints202312.1611.v1}, url = {https://doi.org/10.20944/preprints202312.1611.v1}, year = 2023, month = {December}, publisher = {Preprints}, author = {Fatemeh Hasani and Zahra Norouzi and Gholamreza Roshandel and Alireza Norouzi}, title = {Comparative Analysis of COVID-19 Severity and Mortality Among Vaccinated and Unvaccinated Individuals During the Delta Variant Surge in a Tertiary Care Center}, journal = {Preprints} }