Background The long‐term sequalae of COVID‐19 remain poorly characterized. We
assessed persistent symptoms in previously hospitalized patients with COVID‐19 and …

Aims Patients with cardiac disease are considered high risk for poor outcomes following
hospitalization with COVID-19. The primary aim of this study was to evaluate heterogeneity …

Background The long-term sequalae of COVID-19 remain poorly characterised. In this study,
we aimed to assess long-standing symptoms (LS)(symptoms lasting from the time of …

Objectives Clinical characterisation studies have been essential in helping inform research,
diagnosis and clinical management efforts, particularly early in a pandemic. This systematic …

Objectives To characterize asymptomatic SARS-CoV-2 infections and develop a symptom-
based risk score useful in primary healthcare. Study design and setting Sixty-one thousand …

Background Similar to coronavirus disease 2019 (COVID-19), the pathogenesis of
inflammatory rheumatic diseases includes cytokines dysregulation and increased …

Background. The incidence of COVID-19 novel coronavirus infection has a wave-like pattern
with surges in new cases followed by declines. Viral mutations, changes in viral properties …

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has plagued
virtually every continent and country, and Portugal is no exception. The high number of …

Objective To evaluate the clinical efficacy and safety of leflunomide (L) added to the
standard-of-care (SOC) treatment in COVID-19 patients hospitalised with moderate/critical …

Introduction Patients receiving rituximab (RTX) may be at increased risk for severe
Coronavirus infections and worse outcomes compared with the general population …