Introduction SARS-CoV-2 is responsible for a large number of global COVID-19 cases.
Strategies such as social isolation, personal hygiene and frequent hand washing have been …

Vaccines have proven effective in the treatment and prevention of numerous diseases.
However, traditional attenuated and inactivated vaccines suffer from certain drawbacks such …

The objective of this study was to investigate the incidence and risk factors associated with
COVID-19 vaccine breakthrough infections. We included all persons≥ 18 years that had …

Rollouts of COVID-19 vaccines in the USA were opportunities to redress disparities that
surfaced during the pandemic. Initial eligibility criteria, however, neglected geographic …

Because an annual COVID-19 booster vaccine appears to be required to control the
pandemic, identifying the factors that influence individuals' decision to receive a booster …

Aims and objectives To assess the levels of second COVID‐19 booster dose/new COVID‐19
vaccine hesitancy among nurses and explore the potential predictors of vaccine hesitancy …

Background Despite being a priority population for COVID-19 vaccination, limited data are
available regarding acceptability of COVID-19 vaccines among people living with HIV …

Observational studies are needed to demonstrate real-world vaccine effectiveness (VE)
against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) outcomes. Our …

Objective To compare the effectiveness of the BNT162b2 mRNA (Pfizer-BioNTech) and the
ChAdOx1 (Oxford-AstraZeneca) covid-19 vaccines against infection and covid-19 disease in …

Reliable immunoassays are essential to early predict and monitor vaccine efficacy against
SARS-CoV-2. The performance of an Interferon Gamma Release Assay (IGRA …