Articles: coronavirus.
-
Multiple SARS-CoV-2 variants are identified with higher rates of transmissibility or greater disease severity. Particularly, recent emergence of Omicron variant with rapid human-to-human transmission posts new challenges to the current prevention strategies. In this study, following vaccination with an mRNA vaccine encoding SARS-CoV-2 receptor-binding domain (RBD-mRNA), we detected serum antibodies that neutralized pseudoviruses expressing spike (S) protein harboring single or multiple mutations, as well as authentic SARS-CoV-2 variants, and evaluated its protection against SARS-CoV-2 infection. ⋯ Particularly, RBD-mRNA vaccine completely protected mice from challenge with a virulent mouse-adapted SARS-CoV-2 variant. Among these lineages, B.1.1.7, B.1.351, P.1, B.1.617.2, and B.1.1.529 belong to Alpha, Beta, Gamma, Delta, and Omicron variants, respectively. Our observations reveal that RBD-mRNA vaccine is promising and highlights the need to design novel vaccines with improved neutralization against current and future pandemic SARS-CoV-2 variants.
-
The Irish people were put on lockdown in mid-March 2020 due to concern of the spread of coronavirus. With these societal changes came a notable reduction in emergency department attendance. Our aim was to analyse emergency urological procedures performed during the COVID-19 era versus the previous year. ⋯ Whilst patients with ureteric colic continue to present, those with acute testis pain requiring exploration attended less frequently, raising the possibility of undiagnosed testicular torsion in the community.
-
Health care policymaking during the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has questioned the precedent of restricting hospital visitors. We aimed to synthesize available data describing the resulting impact on patient, family/visitor, and health care provider well-being. We systematically reviewed articles from the World Health Organization COVID-19 Global Literature on Coronavirus Disease Database published between December 2019 through April 2021. ⋯ Critically ill patients were the most represented (12 out of 26 studies). Blanket hospital visitor policies were associated with failure to address the unique needs of patients, their visitors, and health care providers in various clinical environments. Overall, a patient-centered, thoughtful, and nuanced approach to hospital visitor policies is likely to benefit all stakeholders while minimizing potential harms.
-
Mayo Clinic proceedings · Oct 2022
Effectiveness of COVID-19 Booster on the Risk of Hospitalization Among Medicare Beneficiaries.
To determine the effectiveness of booster vaccinations on the risk of hospitalization with coronavirus disease 2019 (COVID-19) and how it varies by enrollee characteristics and interval from the initial vaccination to receipt of a booster. ⋯ Boosters are highly effective in the Medicare population. Approximately 69,225 hospitalizations would be prevented by boosters in the 15 million individuals aged 65 years or older currently not boosted in a period similar to the September 2020 through January 2021 period studied. Boosters provided the greatest benefits if they were received between 6 and 9 months following original vaccinations. However, boosters were associated with substantial decreases in COVID-19 hospitalizations in all categories of enrollees.