Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Mild SARS-CoV-2 infection modifies DNA methylation of peripheral blood mononuclear cells from COVID-19 convalescents
Current quantitative polymerase chain reaction to detect severe acute respiratory syndrome coronavirus 2 may give positive results for other described coronavirus
COVID-19 Incidence and Hospitalization During the Delta Surge Were Inversely Related to Vaccination Coverage Among the Most Populous U.S. Counties
Comparison of Mental Health Symptoms prior to and during COVID-19: Evidence from a Living Systematic Review and Meta-analysis
Computational analysis of quantitative echocardiographic assessments of functional mitral regurgitation: Proximal Isovelocity Surface Area methods
Adapting cleft care protocols in low- and middle-income countries during and after COVID-19: a process-driven review with recommendations
Predicting the end of Covid-19 infection for various countries using a stochastic agent-based model taking into account vaccination rates and the new mutant
Development of machine learning models for the prediction of complications after colorectal and small intestine surgery in psychiatric and non-psychiatric patient collectives (P-Study)
Projecting the transition of COVID-19 burden towards the young population while vaccines are rolled out: a modelling study
Targeting Lyn Kinase in Chorea-Acanthocytosis: A Translational Treatment Approach in an Ultra-Rare Disease
Spectral imaging enables contrast agent-free real-time ischemia monitoring in laparoscopic surgery
Spatiotemporal changes in along-tract profilometry of cerebellar peduncles in cerebellar mutism syndrome
Heart-brain connections: phenotypic and genetic insights from 40,000 cardiac and brain magnetic resonance images
Examining the Relationship between COVID-19 Vaccinations and Reported Incidence
COVID-19 vaccine effectiveness among healthcare workers in Portugal: results from a hospital-based cohort study, December 2020 to November 2021
Diagnostic accuracy of point-of-care lung ultrasound for COVID-19: A systematic review and meta-analysis
Estimating the contribution of HIV-infected adults to household pneumococcal transmission in South Africa, 2016-2018: A hidden Markov modelling study.
The presence of SARS-CoV-2 RNA in different freshwater environments in urban settings determined by RT-qPCR: implications for water security
Recovery from the COVID-19 pandemic by mass vaccination: emergent lessons from the United States and India
Modelling lockdown measures in epidemic outbreaks using selective socio-economic containment with uncertainty
Structural disconnectome mapping of cognitive function in post-stroke patients
Outcomes of SARS-CoV-2 Infection in Patients with Chronic Liver Disease and Cirrhosis: a N3C Study
The Association between Early Country-level Testing Capacity and Later COVID-19 Mortality Outcomes
Sex Modifies the Effect of Genetic Risk Scores for Polycystic Ovary Syndrome on Metabolic Phenotypes
Combined PD-L1 and TIM-3 blockade improves the expansion of fit human CD8+ antigen-specific T cells for adoptive immunotherapy
Sustained patient use and improved outcomes with digital transformation of a COPD service: RECEIVER trial and DYNAMIC-SCOT COVID-19 scale-up response.