Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: Reinfection Rates among Patients who Previously Tested Positive for COVID-19: a Retrospective Cohort Study
Altered Smell and Taste: anosmia, parosmia and the long impact of Covid-19
Investigation and public health response to a COVID-19 outbreak in a rural resort community--Blaine County, Idaho, 2020
Mental health inequalities in healthcare, economic, and housing disruption during COVID -19: an investigation in 12 longitudinal studies
Theory of Mind and Moral Decision-Making in the Context of Autism Spectrum Disorder
A Simple Mathematical Tool to Help Distribute Doses of Two-Dose Covid-19 Vaccines among Non-Immunized and Partly-Immunized Population
Forecasting the Epidemiological Impact of Coronavirus Disease (COVID-19): Pre-vaccination Era
The Failures of an Ideal COVID-19 Vaccine: A Simulation Study
Humoral immune responses to COVID-19 vaccination in people living with HIV on suppressive antiretroviral therapy
Precision MRI Phenotyping Enables Detection of Small Changes in Body Composition for Longitudinal Cohorts
Development of a sensitive trial-ready poly(GP) CSF biomarker assay for C9orf72-associated frontotemporal dementia and amyotrophic lateral sclerosis
The devil is in the details: Reporting and transparent research practices in sports medicine and orthopedic clinical trials
Apolipoprotein E genotype and MRI-detected brain alterations pertaining to neurodegeneration: A systematic review
Preferences for the management of sexually transmitted infections in the South African health system: A discrete choice experiment
A Qualitative Study Regarding Messages of the COVID-19 Vaccine from Vaccinated Healthcare Providers and Healthy Adults
Analysis of opioid distribution before and after recreational marijuana legalization in California
Prenatal smoking, alcohol and caffeine exposure and offspring externalising disorders: A systematic review and meta-analysis
Non-Invasive Prenatal Testing (NIPT) Results for Participants of the eXtraordinarY Babies Study: Screening, Counseling, Diagnosis, and Discordance
Effects of stricter management guidelines on return-to-play timeframes following concussion in professional Australian Rules football
Material properties of urethral stents for hypospadias repair
SARS-CoV-2 epidemic in the South American Southern cone: can combined immunity from vaccination and infection prevent the spread of Gamma and Lambda variants while easing restrictions?
Convergence of Comorbidity and COVID-19 Infection to Fatality: An Investigation Based on Concurrent Health Status Evaluation among Older Adults
Risk factors for SARS-CoV-2 transmission in student residences: a case-ascertained study in Leuven, Belgium from October 2020 until May 2021
Trends and factors associated with initiation of HIV treatment and uptake of viral load testing among PLHIV in Jamaica
Radiographic evaluation of lumbar intervertebral disc height index: an intra and inter-rater agreement and reliability study
A quantitative risk estimation platform for indoor aerosol transmission of COVID-19