Influence of past infection with SARS-CoV-2 on the response to the BNT162b2 mRNA vaccine in health care workers: Kinetics and durability of the humoral immune response.

Background: SARS-CoV-2 vaccines are an invaluable resource against COVID-19. Current vaccine shortage makes it necessary to prioritize distribution to the most appropriate segments of the population.

Methods: This is a prospective cohort study of 63 health care workers (HCWs) from a General Hospital.

Frequency, risk factors, and outcomes of hospital readmissions of COVID-19 patients.

To determine the proportion of patients with COVID-19 who were readmitted to the hospital and the most common causes and the factors associated with readmission. Multicenter nationwide cohort study in Spain. Patients included in the study were admitted to 147 hospitals from March 1 to April 30, 2020.

Venous thromboembolism in patients with renal insufficiency: findings from the RIETE Registry.

Background: Current guidelines make no specific recommendations for venous thromboembolism (VTE) treatment in patients with renal insufficiency, but some experts recommend some reduction in heparin dose.

Methods: Registro Informatizado de Enfermedad TromboEmbólica (RIETE) is an ongoing, prospective registry of consecutively enrolled patients with objectively confirmed, symptomatic, acute VTE. In this analysis we retrospectively analyzed the effect of renal insufficiency on the incidence of fatal pulmonary embolism (PE) and fatal bleeding within 15 days of diagnosis.