Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Emergence of a SARS-CoV-2 E484K variant of interest in Arizona
No difference in risk of hospitalisation between reported cases of the SARS-CoV-2 Delta variant and Alpha variant in Norway
Inhaled nitric oxide use in COVID19-induced hypoxemic respiratory failure.
Performance of a Computational Phenotyping Algorithm for Sarcoidosis Using Diagnostic Codes in Electronic Medical Records: A Pilot Study from Two Veterans Affairs Medical Centers
COVID-19 vaccination coverage and hesitancy among Australians with disability and long-term health conditions
Contact tracing indicators for COVID-19: rapid scoping review and conceptual framework
COVID-19 outcomes in hospitalized puerperal, pregnant, and neither pregnant nor puerperal women: a population study
Rapid spread of the SARS-CoV-2 δ variant in French regions in June 2021
Value-based pricing of a COVID-19 vaccine
Improving Power and Accuracy in Randomized Controlled Trials of Pain Treatments by Accounting for Concurrent Analgesic Use: Statistical Simulations and Analyses of Randomized Controlled Trial Data
Analysis of Social Combinations of Coronavirus Vaccination: Evidence from a Conjoint Analysis
Reflections of COVID-19 cases on the wastewater loading of SARS-CoV-2 RNA: A case of three major cities of Gujarat, India
Structural differences between healthy subjects and patients with schizophrenia and schizoaffective disorder: A graph and control theoretical perspective
Genetic regulation of OAS1 nonsense-mediated decay underlies association with risk of severe COVID-19
High incidence of pulmonary thromboembolism in hospitalized SARS-CoV-2 infected patients
Quantified Flu: an individual-centered approach to gaining sickness-related insights from wearable data
COVID-19 mortality and excess mortality among working-age Californians, by occupational sector: March 2020 through November 2021
Resting State fMRI for Motor Cortex Mapping in Children with Epilepsy
Optimal vaccination with time-varying based on immunity barrier in Hunan Province, China
Risk Factors for Low Humoral Response to BNT-162b2 In Hemodialysis Patients
Explaining ethnicity disparities in COVID-19 mortality: population-based, prospective cohort study
Chromatin remodeler developmental pluripotency associated factor 4 (DPPA4) is a candidate gene for alcohol-induced developmental disorders
Analysis of Y Chromosome Haplogroups in Parkinson's Disease
Significant impacts of the COVID-19 pandemic on race/ethnic differences in USA mortality
Unequal impact of the COVID-19 pandemic on excess deaths, life expectancy, and premature mortality across Spanish regions in 2020 and 2021
Semi-automatic segmentation of the fetal brain from Magnetic Resonance Imaging