Instruct: Identify the main category of medRxiv papers based on their titles.
Query: A randomized, double-blind phase I clinical trial of two recombinant dimeric RBD COVID-19 vaccine candidates: safety, reactogenicity and immunogenicity
Strong immunogenicity of heterologous prime-boost immunizations with the experimental vaccine GRAd-COV2 and BNT162b2 or ChAdOx1-nCOV19
Characteristics and preparedness for COVID-19 outbreaks of Australian residential aged care facilities: A cross-sectional survey
Prediction of COVID-19 Mortality to Support Patient Prognosis and Triage and Limits of Current Open-Source Data
The new SARS-CoV-2 variant and reinfection in the resurgence of COVID-19 outbreaks in Manaus, Brazil
Studying the course of Covid-19 by a recursive delay approach
Pandemic excess mortality in Spain, Sweden, and Switzerland during the COVID-19 pandemic in 2020 was at its highest since 1918
COVID-19 Outcomes in Patients with Cancer: Findings from the University of California Health System Database
Melodic Intonation Therapy for aphasia: A multi-level meta-analysis of randomised controlled trials and individual participant data
The UGT2A1/UGT2A2 locus is associated with COVID-19-related anosmia
Efficacy and Safety of Tregopil, a Novel, Ultra-Rapid Acting Oral Prandial Insulin Analog, as Part of a Basal-Bolus Regimen in Type 2 Diabetes: A Randomized, Active Controlled Phase 3 Study
Methadone overdoses increased 48% during the COVID-19 epidemic
Consensus on COVID-19 vaccination in pediatric oncohematological patients, on behalf of infectious working group of Italian Association of Pediatric Hematology Oncology
Genomics and epidemiology of a novel SARS-CoV-2 lineage in Manaus, Brazil
Effectiveness of BNT162b2 and ChAdOx1 against SARS-CoV-2 household transmission - a prospective cohort study in England
Aerosol tracer testing in the cabin of wide-bodied Boeing 767 and 777 aircraft to simulate exposure potential of infectious particulate such as SARS-CoV-2
CD8+ T cell responses in COVID-19 convalescent individuals target conserved epitopes from multiple prominent SARS-CoV-2 circulating variants
Inequalities in initiation of COVID19 vaccination by age and population group in Israel- December 2020-April 2021
Retinal Microvasculature Alteration in Patients with Rheumatoid Arthritis
PATTERNS OF OCCUPATIONAL MORBIDITY IN ZAMBIA, 2008-2018: A DESCRIPTIVE DATABASE STUDY
Assessing the potential cost-effectiveness of centralized vs point-of-care testing for hepatitis C virus in Pakistan: a model-based comparison
Association between reactogenicity and SARS-CoV-2 antibodies after the second dose of the BNT162b2 COVID-19 vaccine
On-scalp magnetoencephalography for childhood epilepsies
Pre-immunity: the Schrodinger's cat of immunology
ELF5 is a respiratory epithelial cell-specific risk gene for severe COVID-19
Temporal trends in legionellosis national notification data and the effect of COVID-19, Switzerland, 2000- 2020