In late 2020, after circulating for almost a year in the human population, severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2) exhibited a major step change in its …

As the COVID-19 pandemic has evolved during the past years, interactions between human
immune systems, rapidly mutating and selected SARS-CoV-2 viral variants, and effective …

Background The virus neutralization assay is a principal method to assess the efficacy of
antibodies in blocking viral entry. Due to biosafety handling requirements of viruses …

Introduction Long COVID, or post-acute sequelae of SARS-CoV-2 infection (PASC) in∼
30% of all infected individuals. Here, we present a case of PASC in a patient with …

Many elderly patients with severe SARS-CoV-2 infections and COVID-19 infections are
admitted to intensive care units. Age was previously identified as an independent risk factor …

Emergence from the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
pandemic has been facilitated by the rollout of effective vaccines. Successful vaccines …

Numerous clinical parameters link to severe coronavirus disease 2019, but factors that
prevent symptomatic disease remain unknown. We investigated the impact of severe acute …

Abstract Emerging SARS-CoV-2 Omicron variants are highly contagious with enhanced
immune escape mechanisms against the initially approved COVID-19 vaccines. Therefore …

In this single-center observational study with 1,206 participants, we prospectively evaluated
SARS-CoV-2-antibodies (anti-S RBD) and vaccine-related adverse drug reactions (ADR) …

The emergence of SARS-CoV-2 variants calls for continuous monitoring of vaccine
effectiveness (VE). We estimated the absolute effectiveness of complete 2-dose primary …