Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Preventing COVID-19 spread in closed facilities by regular testing of employees - an efficient intervention in long-term care facilities and prisons?
Encounters after Appointments Cancelled Due to COVID-19 in the Veterans Affairs Health Care System
SARS-CoV-2 Aerosol Transmission Indoors: A Closer Look at Viral Load, Infectivity, the Effectiveness of Preventive Measures and a Simple Approach for Practical Recommendations
Inequality indices to monitor geographic differences in incidence, mortality and fatality rates over time during the COVID-19 pandemic.
Nasopharyngeal and serological anti SARS-CoV-2 IgG/IgA responses in COVID-19 patients.
A2B-COVID: A method for evaluating potential SARS-CoV-2 transmission events
An extended SEIARD model for COVID-19 vaccination in Mexico: analysis and forecast
Emergence and spread of a sub-lineage of SARS-CoV-2 Alpha variant B.1.1.7 in Europe, and with further evolution of spike mutation accumulations shared with the Beta and Gamma variants
Adherence to prophylaxis and bleeding outcome: a multicenter Nigerian study
Relative perceived importance of different settings for SARS-CoV2 acquisition in England and Wales: Analysis of the Virus Watch Community Cohort
Differentiating between infectious and non-infectious influenza A virus and coronavirus RNA levels using long-range RT-qPCR
Integrative genomic analyses in adipocytes implicate DNA methylation in human obesity and diabetes
Effect of antibiotic consumption on self-reported recovery from uncomplicated urinary tract infection
A framework for reconstructing SARS-CoV-2 transmission dynamics using excess mortality data
Change in disease dynamics and health care utilization in children during COVID19 in a tertiary care hospital of Eastern India.
Perceived Quality of Care in Health Centers Affiliated with a Community-Based Health Insurance Scheme in Two Districts of Northeastern Ethiopia: A Multilevel Analysis
IMU-derived kinematics detect gait differences with age or knee osteoarthritis but differ from marker-derived inverse kinematics
Efficacy and Safety of Ayurveda Intervention AYUSH 64 as add-on therapy for patients with COVID 19 infections: An open labelled, Parallel Group, Randomized controlled clinical trial
Improving ascertainment of suicidal ideation and suicide attempt with natural language processing
Controlling COVID-19 via test-trace-quarantine
Cognitive enhancement: Effects of methylphenidate, modafinil and caffeine on latent memory and resting state functional connectivity in healthy adults
In-person schooling and COVID-19 transmission in Canada's three largest cities
Specialized interferon ligand action in COVID19
Relationship between obstructive sleep apnea and human leukocyte antigen variants
The appendix orchestrates T-cell mediated immunosurveillance in colitis-associated cancer
Persisting Chemosensory Impairments in 366 Healthcare Workers Following COVID-19: An 11-Month Follow-up.