Abstract Background Coronavirus disease 2019 (COVID-19) vaccines have been proven to
decrease the severity of acute-phase infection; however, little is known about their effect on …

Objective: We performed a systematic literature review and meta-analysis on the
effectiveness of coronavirus disease 2019 (COVID-19) vaccination against post-COVID …

Background: Although multiple studies have revealed that coronavirus disease 2019
(COVID-19) vaccines can reduce COVID-19–related outcomes, little is known about their …

Background Global vaccine development efforts have been accelerated in response to the
devastating coronavirus disease 2019 (COVID-19) pandemic. We evaluated the impact of a …

Background Although COVID-19 vaccination decreases the risk of severe illness, it is
unclear whether vaccine administration may impact the prevalence of long-COVID. The aim …

Objectives We aimed to assess the short-term effectiveness of COVID-19 vaccines among
immunocompromised patients to prevent laboratory-confirmed symptomatic COVID-19 …

Background Available data show that COVID-19 vaccines may be less effective in
immunocompromised populations, who are at increased risk of severe COVID-19 …

Both clinical trials and studies leveraging real-world data have repeatedly confirmed the
three COVID-19 vaccines authorized for use by the Food and Drug Administration are safe …

Background The resurgence of COVID-19 cases since June 2021, referred to as the fourth
COVID-19 wave, has led to the approval and administration of booster vaccines. Our study …

Background The aim was to evaluate the necessity of coronavirus disease 2019 (COVID-19)
vaccination in persons with prior COVID-19. Methods Employees of the Cleveland Clinic …