The Omicron (B. 1.1. 529) variant of the severe acute respiratory syndrome Coronavirus 2
(SARS-CoV-2) had an increased rate of spreading among the general population. Although …

Vaccination reduces risk of infection, hospitalization, and death due to SARS-Cov2.
Vaccinated patients may however experience severe SARS-Cov2 disease. The objective …

The high mortality of patients with coronavirus disease 2019 (COVID-19) is effectively
reduced by vaccination. However, the effect of vaccination on mortality among hospitalised …

The aims of this study were to describe the characteristics of patients hospitalized with delta
SARS-CoV-2 breakthrough infection, and to identify factors associated with pneumonia on …

Background: The main impetus behind the worldwide Covid-19 vaccination campaign in
2021 was to reduce the mortality attributed to SARS-CoV-2 infection in the preceding year …

Background Despite vaccines' effectiveness in reducing COVID-19 infection rates and
disease severity, their impact on critical patients presenting with acute respiratory failure is …

Background Vaccination helped in reducing mortality and disease severity due to COVID-
19. Some patients can develop breakthrough infections. The effect of vaccination in critically …

COVID-19 is no longer a global health emergency, but it remains challenging to predict its
prognosis. Objective To develop and validate an instrument to predict COVID-19 …

Abstract Background In March 2022, a severe outbreak of the SARS-CoV-2 Omicron variant
occurred in Shanghai. This study aimed to determine disease severity, clinical features …

Objetivo: Analisar as características clínicas e desfechos de pacientes com insuficiência
respiratória aguda por COVID-19 com base na situação vacinal no momento da admissão …