Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Determinants of SARS-CoV-2 Vaccine Engagement in Algeria: A Population-based Study with Systematic Review of Studies from Arab Countries of the MENA Region
Anxiety and Depression among Medical Doctors in Catalonia, Italy, and the UK during the COVID-19 Pandemic
Computer skills of health workers in rural Ghana and their use of social media: Implications for increased use of information technology in service delivery
Use of Convalescent Plasma Therapy among Hospitalized Coronavirus Disease 2019 (COVID-19) Patients: A Single-Center Experience
Serological prevalence of SARS-CoV-2 infection and associated factors in healthcare workers in a "non-COVID" hospital in Mexico City
Evaluation of lymphocyte subtypes in COVID-19 patients
Phase Recognition in Contrast-Enhanced CT Scans based on Deep Learning and Random Sampling
Deleterious drugs in COVID-19: a rapid systematic review and meta-analysis
Development and validation of a clinical and genetic model for predicting risk of severe COVID-19
Rapid comparative evaluation of SARS-CoV-2 rapid point-of-care antigen tests
Wastewater Surveillance of SARS-CoV-2 across 40 U.S. states
Genome-Wide Association Study of Estradiol Levels, and the Causal Effect of Estradiol on Bone Mineral Density
Evaluating Visual Photoplethysmography Method
Cash Transfer Programs and HIV-Related Outcomes: an Analysis of 42 Countries from 1996 to 2019
Causal effect of adiposity on the risk of 19 gastrointestinal diseases: a Mendelian randomization study
Discovery of Novel Trans-Ancestry and Ancestry-Specific Gene Loci for Total Testosterone in a Multi-Ancestral Analysis of Men in the Million Veteran Program
Remote Intensive Parent-Implemented Intervention for Young Children on the Autism Spectrum During Covid-19: The Experience of Parents and Therapists
Development of Novel Measures for Alzheimer's Disease Prevention Trials (NoMAD)
Demarcation line determination for diagnosis of gastric cancer disease range using unsupervised machine learning in magnifying narrow-band imaging
Increased Akkermansia abundance is associated with increased colonic mucosal ω-3 fatty acids and decreased colonic mucosal PGE2 concentrations following healthy dietary pattern interventions
Screening for Atrial Fibrillation in Older Adults at Primary Care Visits: the VITAL-AF Randomized Controlled Trial
Regional atrophy and cognitive decline depend on definition of subjective cognitive decline
Effects of visual attention modulation on dynamic effective connectivity and visual fixation during own-face viewing in body dysmorphic disorder
Characterizing Dual Combination Therapy Use in Treatment Escalation of Hypertension: Real-World Evidence from Multinational Cohorts
Development of a Highly Sensitive Serum Neurofilament Light Chain Assay on an Automated Immunoassay Platform
Multi-omics Characterization of Neutrophil Extracellular Trap Formation in Severe and Mild COVID-19 Infections