Prior immunization status of COVID-19 patients and disease severity: A multicenter retrospective cohort study assessing the different types of immunity

Aslam, J., Khan, F. S., Talha Haris, M., Hewadmal, H., Khalid, M., Alshahrani, M. Y., … Zafar, U. (2023). Prior immunization status of COVID-19 patients and disease severity: A multicenter retrospective cohort study assessing the different types of immunity. Vaccine, 41(2), 598–605. https://doi.org/10.1016/j.vaccine.2022.12.003