Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: The kinetic of SARS-CoV-2 antibody (Ab) decline determines the threshold for Ab persistence up to one year
Exponential increase in neutralizing and spike specific antibodies following vaccination of COVID-19 convalescent plasma donors
PCSK6 and Survival in Idiopathic Pulmonary Fibrosis
Pre-pandemic cognitive function and COVID-19 mortality: prospective cohort study
Insights on Telemedicine Use by Physiatrists Before, During, and Beyond the COVID-19 Pandemic
Development and validation of the RCOS prognostic index: a bedside multivariable logistic regression model to predict hypoxaemia or death in patients with SARS-CoV-2 infection
Reduced Energy Per Cycle, a Marker of Glutamatergic Synaptic Strength, in Individuals Diagnosed with PTSD and Depression
Large-scale social media language analysis reveals emotions and behaviours associated with nonmedical prescription drug use
SEVERE COVID-19 IS MARKED BY DYSREGULATED SERUM LEVELS OF CARBOXYPEPTIDASE A3 AND SEROTONIN
Investigating a possible causal relationship between maternal serum urate concentrations and offspring birthweight: A Mendelian randomization study
Indications that Stockholm has reached herd immunity, given limited restrictions, against several variants of SARS-CoV-2
Genomic reconstruction of the SARS-CoV-2 epidemic in England
Understanding how the design and implementation of Online Consultations influence primary care outcomes: Systematic review of evidence with recommendations for designers, providers, and researchers
Decoding mitochondrial genes in pediatric AML and development of a novel prognostic mitochondrial gene signature
SARS-CoV-2 shedding, infectivity and evolution in an immunocompromised adult patient
Measuring vaccine efficacy against infection and disease in clinical trials: sources and magnitude of bias in COVID-19 vaccine efficacy estimates
Diagnostic accuracy of age-adjusted D-dimer for pulmonary embolism among Emergency Department patients with suspected SARS-COV-2: A Canadian COVID-19 Emergency Department Rapid Response Network study
Prediction of Subsequent Need for Intensive Oxygen Supplementation in Galveston, Texas: A Retrospective Cohort Study and Multivariable Regression Model of Unvaccinated COVID-19 Patients
Prospective cohort study of workers diagnosed with COVID-19 and subsequent unemployment
Developing a model for predicting impairing physical symptoms in children 3 months after a SARS-CoV-2 PCR-test: The CLoCk Study
Non-pharmaceutical interventions and the emergence of pathogen variants
Statin intolerance - Prevalence and practical management in a specialized lipid clinic
Durability of ChAdOx1 nCov-19 (AZD1222) vaccination in people living with HIV - responses to SARS-CoV-2, variants of concern and circulating coronaviruses
Diagnostic Value of Genetic Mutation Analysis and Mutation Profiling of cfDNA in Intraocular Fluid for Vitreoretinal Lymphoma
Mask Interventions in K12 Schools Can Also Reduce Community Transmission in Fall 2021
Observable Variations in Human Sex Ratio at Birth