Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: An external validation of the QCovid risk prediction algorithm for risk of mortality from COVID-19 in adults: national validation cohort study in England
Inequalities in access to healthcare by local policy model among newly arrived refugees: evidence from population-based studies in two German states
A comprehensive digital phenotype for postpartum hemorrhage
Assisted partner services for people who inject drugs: Index characteristics associated with untreated HIV in partners
Evaluation of efficiency and sensitivity of 1D and 2D sample pooling strategies for SARS-CoV-2 RT-qPCR screening purposes
COVID-19 mortality prediction model, 3C-M, built for use in resource limited settings - understanding the relevance of neutrophilic leukocytosis in predicting disease severity and mortality
COVID-19 contact tracing during first delta wave, Lebanon, 2021
Covid-19 positive test cycle threshold trends predict covid-19 mortality in Rhode Island
Attenuated alpha oscillations as an index of cortical hyperexcitability: Evidence from migraine patients
High seroprevalence of Leishmania infantum is linked to immune activation in people with HIV: a two-stage cross-sectional study in Bahia, Brazil
The immune profile of Major Dysmood Disorder: proof of concept and mechanism using the precision nomothetic psychiatry approach
Necessity of COVID-19 Vaccination in Persons Who Have Already Had COVID-19
Risk of reactivation of hepatitis B virus (HBV) and tuberculosis (TB) and complications of hepatitis C virus (HCV) following Tocilizumab therapy: A systematic review to inform risk assessment in the COVID era
The impact of genomic structural variation on the transcriptome, chromatin, and proteome in the human brain
Molecular mapping of urinary complement peptides in kidney diseases
Psychometric Properties of a New Stress-Related Personality Scale: The Virtual Inventory of Behavior and Emotions (VIBE)
Nested pool testing strategy for the reliable identification of individuals infected with SARS-CoV-2
Association between Median Household Income, State Medicaid Expansion Status, and COVID-19 Outcomes Across US Counties
Use of rapid molecular tuberculosis diagnostics across Brazil's incarcerated population
Vaccine-Hesitant Parents' Considerations Regarding Covid-19 Vaccination of Adolescents
Quantitative assessment of pregnancy outcome following recurrent miscarriage clinic care: a prospective cohort study
Risk of reinfection after seroconversion to SARS-CoV-2: A population-based propensity-score matched cohort study
Point-of-Care Ultrasound (POCUS) Predicts Clinical Outcomes in Patients with COVID-19.
BNT162b2 Vaccination efficacy is marginally affected by the SARS-CoV-2 B.1.351 variant in fully vaccinated individuals.
Store-Operated Calcium Entry Controls Innate and Adaptive Immune Cell Function in Inflammatory Bowel Disease
Resilient SARS-CoV-2 diagnostics workflows including viral heat inactivation