Antibody-dependent enhancement (ADE) is a phenomenon in which antibodies produced in
the body after infection or vaccination may enhance subsequent viral infections in vitro and …

Objectives: This umbrella meta-analysis aims to provide comprehensive and synthesized
evidence regarding the effectiveness and safety of COVID-19 vaccinations based on current …

We assessed the seroepidemiology of SARS-CoV-2 infection and the incidence of
coronavirus disease 2019 (COVID-19) before and during the rollout of COVID-19 vaccines …

At the University Hospital of Bari, during the first year after the start of the mandatory
vaccination campaign with BNT162b2 mRNA COVID-19 vaccine, the preliminary results of …

Following the spread of the SARS-CoV-2 coronavirus, an unprecedented burden has been
placed on health care systems, with health care workers (HCWs) being most at risk of …

Vaccines are the most effective strategy to control the spread of coronavirus disease‐2019
(COVID‐19). Data on COVID‐19 among healthcare workers (HCW) pre‐and postvaccination …

Background: This study aimed to investigate the early and longitudinal humoral response in
Healthcare Workers (HCWs) after two doses of the BNT162b2 vaccine and to assess the …

Objectives Since the beginning of the COVID-19 pandemic, adherence to preventive
behaviours to limit virus spread has been a major issue. The study objective was to identify …

A retrospective observational study was conducted among healthcare workers (HCWs) in a
tertiary paediatric hospital. The study covered the period before and after implementation of …

Objetivo: Identificar y comparar los determinantes de letalidad por la COVID-19 en
trabajadores de salud del Perú, entre la primera y segunda olas. Material y Métodos …