Instruct: Identify the main category of Medrxiv papers based on their titles.
Query: In vitro, classical complement activation differs by disease severity and between SARS-CoV-2 antigens
Hyperactive immature state and differential CXCR2 expression of neutrophils in severe COVID-19
The impact of vitamin D supplementation on mortality rate and clinical outcomes of COVID-19 patients: A systematic review and meta-analysis
Sex- and Gender-specific Risk Factors of Post-COVID-19 Syndrome: A Population-based Cohort Study in Switzerland
Generalizability Challenges of Mortality Risk Prediction Models: A Retrospective Analysis on a Multi-center Database
Modelling the cost-effectiveness of essential and advanced critical care for COVID-19 patients in Kenya
Increased Risk of Severe COVID-19 Disease in Pregnancy in a Multicenter Propensity Score-Matched Study.
SARS-CoV-2 infections in airway epithelial cells from smokers versus non-smokers
Multi-trait genome-wide association study of opioid addiction: OPRM1 and Beyond
A Mobile App for Prolonged Grief among Bereaved Parents: Study Protocol for a Randomized Controlled Trial
Covid-19 Exposure Assessment Tool (CEAT): Easy-to-use tool to quantify exposure based on airflow, group behavior, and infection prevalence in the community
Diagnostic Utility of Antigen Detection Rapid Diagnostic Tests for Covid- 19: A Systematic Review and Meta-Analysis
Epidemiology of infections with SARS-CoV-2 Omicron BA.2 variant in Hong Kong, January-March 2022
Ketamine and attentional bias to threat: dynamic causal modeling of magnetoencephalographic connectivity in treatment-resistant depression
Disentangling the effect of measures, variants and vaccines on SARS-CoV-2 Infections in England: A dynamic intensity model
Genome-wide polygenic risk score method for diabetic kidney disease in patients with type 2 diabetes
Impact of diabetes mellitus on the stabilization and osseointegration of dental implants: a retrospective study in Greece
Estimates of reduced vaccine effectiveness against hospitalization, infection, transmission and symptomatic disease of a new SARS-CoV-2 variant, Omicron (B.1.1.529), using neutralizing antibody titers
Evaluating the Long-Term Efficacy of COVID-19 Vaccines
High correlation between binding IgG (anti-RBD/S) and neutralizing antibodies against SARS-CoV-2 six months after vaccination
Mental Health Concerns Related to the COVID-19 Pandemic on Twitter in the UK
Participatory Research: A Priority Setting Partnership for Chronic Musculoskeletal Pain in Denmark
COVID-19 and Herpes Simplex Virus Infection: A Cross-Sectional Study
EVALUATION OF A RAPID ANTIGEN TEST FOR SARS-COV-2 IN SYMPTOMATIC PATIENTS AND THEIR CONTACTS: A MULTICENTER STUDY
Prediction models with survival data: a comparison between machine learning and the Cox proportional hazards model
Healthcare worker risk of COVID-19: A 20-month analysis of protective measures from vaccination and beyond