Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Ribavirin antiviral combination therapy in COVID 19, a single-center experience
The BNT162b2 mRNA vaccine against SARS-CoV-2 reprograms both adaptive and innate immune responses
Tie2 activation protects against prothrombotic endothelial dysfunction in COVID-19
Pre-diagnostic plasma metabolomics and the risk of exfoliation glaucoma
Prevalence and duration of detectable SARS-CoV-2 nucleocapsid antibody in staff and residents of long-term care facilities over the first year of the pandemic (VIVALDI study): prospective cohort study
COVID-19 Bimodal Clinical and Pathological Phenotypes
Chemosensory dysfunctions induced by COVID-19 can persist up to 7 months: A study of over 700 healthcare workers
Virtual Trials: Causally-validated treatment effects efficiently learned from an observational brain cancer registry
Pharmacokinetics of favipiravir in adults with mild COVID-19 in Thailand
Ignoring spatial heterogeneity in drivers of SARS-CoV-2 transmission in the US will impede sustained elimination
Impact of national and regional lockdowns on COVID-19 epidemic waves: Application to the 2020 spring wave in France
Use of Ketamine Infusions for Treatment of Complex Regional Pain Syndrome: A Systematic Review
Trajectories of imitation skills in preschoolers with Autism Spectrum Disorders
Advancing data science in drug development through an innovative computational framework for data sharing and statistical analysis.
Correlates of COVID-19 Vaccine Hesitancy among People who Inject Drugs in the San Diego-Tijuana Border Region
Multi-tract multi-symptom relationships in pediatric concussions
Impact of the COVID-19 epidemic on mortality in rural coastal Kenya
Immunosuppression impaired the immunogenicity of inactivated SARS-CoV-2 vaccine in non-dialysis kidney disease patients
Double-blind, Randomized, Placebo-Controlled study to evaluate the Efficacy of an early treatment with Herbal Supplement based in the Prevention of Post-Traumatic Stress Disorder in emergency department (PHYTeS Study)
Recovery from the COVID-19 pandemic by mass vaccination: emergent lessons from the United States and India
6-Month Follow Up of 8679 Hospitalized COVID-19 Patients in Germany: A Nationwide Cohort Study
Meta-analysis of COVID-19 patients to understand the key predictors of mortality in the non-vaccinated groups in remote settings
Monitoring tubular epithelial cell damage in AKI via urine flow cytometry
Disease-specific contribution of pulvinar dysfunction to impaired emotion recognition in schizophrenia
Estimating typhoid incidence from community-based serosurveys:  A multicohort study in Bangladesh, Nepal, Pakistan and Ghana
Serological Response to Three, Four and Five Doses of SARS-CoV-2 Vaccine in Kidney Transplant Recipients