Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Seroprevalence of IgG antibodies against SARS coronavirus 2 in Belgium - a serial prospective cross-sectional nationwide study of residual samples (March - October 2020)
COVID-19 due to the B.1.617.2 (Delta) variant compared to B.1.1.7 (Alpha) variant of SARS-CoV-2: two prospective observational cohort studies
Early evidence for the safety of certain COVID-19 vaccines using empirical Bayesian modeling from VAERS
Space-time Classification Index for Assessing COVID-19 Hotspots
Multi-objective Risk-based Resource Allocation for Urban Pandemic Preparedness: The COVID-19 Case in Bogota, Colombia
Understanding Barriers toward Interventions for Childhood Obesity in Minority Communities: A Rapid Review
Maternal Antibody Response and Transplacental Transfer Following SARS-CoV-2 Infection or Vaccination in Pregnancy
Applications of Digital Microscopy and Densely Connected Convolutional Neural Networks for Automated Quantitation of Babesia-Infected Erythrocytes
Homophily in risk and behavior complicate understanding the COVID-19 epidemic curve
Is Second dose of vaccination useful in previously SARS-CoV-2 infected Health Care Workers?
Continued Effectiveness of COVID-19 Vaccination among Urban Healthcare Workers during Delta Variant Predominance
The locus coeruleus shows a spatial pattern of structural disintegration in Parkinson's disease.
Combined Metabolic Activators accelerates recovery in mild-to-moderate COVID-19
Early Carotid Revascularization Rates, Procedural Distribution, and Hospital Density
Feasibility of Social Media Recruitment for Orofacial Cleft Genetic Research
Efferocytosis of SARS-CoV-2-infected dying cells impairs macrophage anti-inflammatory programming and continual clearance of apoptotic cells
Rapid and Sensitive Detection of SARS-CoV-2 Infection Using Quantitative Peptide Enrichment LC-MS Analysis
Suppression of de novo antibody responses against SARS-CoV2 and the Omicron variant after mRNA vaccination and booster in patients with B cell malignancies undergoing active treatment, but maintenance of pre-existing antibody levels against endemic viruses.
Sequential appearance and isolation of a SARS-CoV-2 recombinant between two major SARS-CoV-2 variants in a chronically infected immunocompromised patient
Validation of a Trans-Ancestry Polygenic Risk Score for Type 2 Diabetes in Diverse Populations
TUNNEL WIDENING OF ACL RECONSTRUCTION AUGMENTED BY AN PLATELET RICH OSTEOCONDUCTIVE-OSTEOINDUCTIVE ALLOGRAFT COMPOUND: A RANDOMIZED BLIND-ANALYSIS PILOT STUDY
Reduction in the 2020 Life Expectancy in Brazil after COVID-19
Phenotype Risk Scores: moving beyond cases and controls to classify psychiatric disease in hospital-based biobanks.
THE EFFECT OF BARICITANIB USAGE ON THE CLINICAL AND BIOCHEMICAL PROFILES OF COVID-19 PATIENTS- A RETROSPECTIVE OBSERVATIONAL STUDY
An interactive dashboard to track themes, development maturity, and global equity in clinical artificial intelligence research
Single Dose Vaccination in Healthcare Workers Previously Infected with SARS-CoV-2