Instruct: Identify the main category of the given medRxiv paper based on the title.
Query: Effectiveness of mRNA COVID-19 Booster Vaccines against Omicron and Delta Variants among US Veterans
Safety and immunogenicity of inactivated whole virion vaccine CoviVac against COVID-19: a multicenter, randomized, double-blind, placebo-controlled phase I/II clinical trial
Characteristics and Factors Associated with COVID-19 Infection, Hospitalization, and Mortality Across Race and Ethnicity
Stability of the stroke code during the COVID-19 pandemic in the region of Madrid: a retrospective cohort study
Triangulating evidence in health sciences with Annotated Semantic Queries
Machine learning algorithm to perform ASA Physical Status Classification
Water, sanitation, and hygiene practices and challenges during the COVID-19 pandemic: a cross-sectional study in rural Odisha, India
Vaccine effectiveness of Pfizer-BioNTech and Oxford-AstraZeneca to prevent severe COVID-19 in Costa Rica by September and October 2021: A nationwide, observational study of hospitalisations prevalence.
HbA1c measurements from UK Biobank are different to those in linked primary care records: implications for combining biochemistry data from research studies and routine clinical care
Spatio-temporal modelling of the first Chikungunya epidemic in an intra-urban setting: the role of socioeconomic status, environment and temperature
Age-seroprevalence curves for the multi-strain structure of influenza A virus
Comparing SARS-CoV-2 case rates between pupils, teachers and the general population: results from Germany
Symptom Monitoring based on Digital Data Collection During Inpatient Treatment of Schizophrenia Spectrum Disorders - a Feasibility Study
Excess Deaths associated with the COVID-19 Pandemic in Ukraine in 2020
Signatures of immune senescence predict outcomes and define checkpoint blockade-unresponsive microenvironments in acute myeloid leukemia
Genome-wide association study of autopsy-confirmed Multiple System Atrophy identifies common variants near ZIC1 and ZIC4
Improving Fabric Face Masks: Impact of Design Features on the Protection Offered by Fabric Face Masks
Using Satellite Images and Deep Learning to Identify Associations Between County-Level Mortality and Residential Neighborhood Features Proximal to Schools: A Cross-Sectional Study
The preoperative abundance of Prevotella associates with anastomotic healing after colorectal surgery.
The epidemiological characteristics of the primary health care based COVID-19 swabbed persons in Qatar, March- October 2020
Heterozygous PRKN mutations are common but do not increase the risk of Parkinson's disease
Gender Based Differences in Risks and Comorbidities in Patients Hospitalized with Acute Exacerbation of COPD: A Retrospective Observational study in Eastern-Nepal
Clinical and economic utility of a preterm birth predictor derived from an analysis of a large and diverse pregnancy cohort
OUTCOME AND ASSOCIATED FACTORS AMONG ROAD TRAFFIC ACCIDENT VICTIMS AT WOLAITA SODDO CHRISTIAN HOSPITAL, WOLAITA SODDO, SOUTH ETHIOPIA 2020, INSTITUTION-BASED CROSS-SECTIONAL STUDY.
Validation of Automated Biventricular Myocardial Segmentation from Coronary Computed Tomographic Angiography for Multimodality Image Fusion
Impact of real-time assessment on the training of trainers for the introduction of rotavirus vaccine in India