Instruct: Identify the main category of Medrxiv papers based on their titles.
Query: Vaccine uptake and SARS-CoV-2 antibody prevalence among 207,337 adults during May 2021 in England: REACT-2 study
Predisposing factors associated with the severity of the illness in adults with Covid-19 in Nepal.
Understanding the immunological landscape of England during SARS-CoV2 Omicron variant wave
Serological prevalence of SARS-CoV-2 infection and associated factors in healthcare workers in a "non-COVID" hospital in Mexico City
Occupational versus community risk of SARS-CoV-2 infection among employees of a long-term care facility: an observational study
The first GAEN-based COVID-19 contact tracing app in Norway identifies 80% of close contacts in "real life" scenarios.
"If somebody had told me I'd feel like I do now, I wouldn't have believed them"    Older adults' experiences of the BELL trial: a qualitative study
Clinical Decision Support in Cardiovascular Medicine: Effectiveness, Implementation Barriers, and Regulation
A New Approach for Timely Systematic Reviews of Rapidly Evolving Research: Identifying Evidence in Which We Can Place Our Confidence
The role of sociodemographic and psychosocial variables in early childhood development: A secondary data analysis of the 2014 Multiple Indicator Cluster Survey in the Dominican Republic
HIV service interruptions during the COVID-19 pandemic in China: the role of HIV service challenges and institutional response from healthcare professional's perspective
Prevalence and risk factors of short birth interval in Bangladesh: Evidence from the linked data of population and health facility survey
Exploring the causal effect of maternal pregnancy adiposity on offspring adiposity: Mendelian randomization using polygenic risk scores
Insulinopathies of the brain? Genetic overlap between somatic insulin-related and neuropsychiatric disorders
Development of a Metastatic Uveal Melanoma Prognostic risk Score (MUMPS) for use in patients receiving immune checkpoint inhibitors
Machine Learning Enabled Non-invasive Diagnosis of Nonalcoholic Fatty Liver Disease and Assessment of Abdominal Fat from MRI Data
Ankle and Toe Brachial Index Extraction from Clinical Reports For Peripheral Artery Disease Identification: Unlocking Clinical Data through Novel Methods
Heterologous vaccination with inactivated and mRNA vaccines increases B and T cell responses to SARS-CoV-2
Impact of antibiotics to off-target infant gut microbiota and resistance genes in cohort studies
Extreme COVID-19 waves reveal hyperexponential growth and finite-time singularity
The Impact of COVID-19 Restrictions on Childhood Vaccination Uptake: A Rapid Review
The effect of calcium supplementation in people under 35 years old: A systematic review and meta-analysis of randomized controlled trials
Stimulant Use Interventions May Strengthen 'Getting to Zero' Initiatives in Illinois: Insights from a Modeling Study
Multidisciplinary analysis of evolution based Abiraterone treatment for metastatic castrate resistant prostate cancer
SARS-CoV2 serology assays: utility and limits of different antigen based tests through the evaluation and the comparison of four commercial tests
Does living in major towns favor institutional delivery in Somalia?