Comparative vaccine effectiveness against severe COVID-19 over time in US hospital administrative data: a case-control study.

Background: Research suggests the protection offered by COVID-19 vaccines might wane over time, prompting consideration of booster vaccinations. Data on which vaccines offer the most robust protection over time, and which patients are most vulnerable to attenuating protection, could help inform potential booster programmes. In this study, we used comprehensive hospitalisation data to estimate vaccine effectiveness over time.

Remdesivir and Mortality in Patients With Coronavirus Disease 2019.

Background: The impact of remdesivir (RDV) on mortality rates in coronavirus disease 2019 (COVID-19) is controversial, and the mortality effect in subgroups of baseline disease severity has been incompletely explored. The purpose of this study was to assess the association of RDV with mortality rates in patients with COVID-19.

Methods: In this retrospective cohort study we compared persons receiving RDV with those receiving best supportive care (BSC).

Myocarditis and Pericarditis After Vaccination for COVID-19.

This study investigates the incidence of myocarditis and pericarditis emergency department or inpatient hospital encounters before COVID-19 vaccine availability (January 2019–January 2021) and during a COVID-19 vaccination period (February-May 2021) in a large US health care system.