Instruct: Identify the main category of medRxiv papers based on their titles.
Query: Trends in Fentanyl and Fentanyl Derivative Utilization in the United States
Delirium and Neuropsychological Outcomes in Critically Ill Patients with COVID-19: an Institutional Case Series
A Dynamical Map to Describe Covid-19 Epidemics
Of masks and methylene blue - the use of methylene blue photochemical treatment to decontaminate surgical masks contaminated with a tenacious small non-enveloped norovirus
Household transmission of SARS-CoV-2 in Norway; a prospective, longitudinal study showing increased transmissibility of the Alpha variant (B.1.1.7) compared with other variants
The Impact of State Paid Sick Leave Policies on Longitudinal Weekday Workplace Mobility During the COVID-19 Pandemic
Serendipitous COVID-19 Vaccine-Mix in Uttar Pradesh, India: Safety and Immunogenicity Assessment of a Heterologous Regime
Salzburg Visual Field Trainer (SVFT): A virtual reality device for (the evaluation of) neuropsychological rehabilitation
Effects of Age, Sex, Serostatus and Underlying Comorbidities on Humoral Response Post-SARS-CoV-2 Pfizer-BioNTech Vaccination: A Systematic Review
A Systematic Review of Long-term Antidepressant Outcomes in Comorbid Depression and Type 2 Diabetes
On the persistence of mental health deterioration during the COVID-19 pandemic by sex and ethnicity in the UK: evidence from Understanding Society
Impaired visual processing in psychosis patients with a predisposition for visual hallucinations
Estimating COVID-19 cases and deaths prevented by non-pharmaceutical interventions in 2020-2021, and the impact of individual actions: a retrospective model-based analysis
Effect Monitoring and Insights from Vaccination program of Healthcare Workforce from a tertiary level hospital in India against SARS-CoV-2.
Recent SARS-CoV-2 seroconversion in a national, community-based prospective cohort of U.S. adults
Impact of the COVID-19 pandemic on the provision of routine childhood immunizations in Ontario, Canada
Analysis of overdispersion in airborne transmission of Covid-19
SEED: Symptom Extraction from English Social Media Posts using Deep Learning and Transfer Learning
Distributed Counterfactual Modeling Approach for Investigating Hospital-Associated Racial Disparities in COVID-19 Mortality
Teaching an Old Dog New Tricks: Serum Troponin T as a Biomarker in Amyotrophic Lateral Sclerosis
Towards adaptive deep brain stimulation: clinical and technical notes on a novel commercial device for chronic brain sensing
DERIVATION AND VALIDATION OF A CLINICAL SCORE TO PREDICT DEATH AMONG NON-PALLIATIVE COVID-19 PATIENTS PRESENTING TO EMERGENCY DEPARTMENTS: THE CCEDRRN COVID MORTALITY SCORE
Point of Care Testing using rapid automated Antigen Testing for SARS-COV-2 in Care Homes; an exploratory safety, usability and diagnostic agreement evaluation
SARS-CoV-2 antibody profile of naturally infected and vaccinated individuals detected using qualitative, semi-quantitative and multiplex immunoassays
Modelling the recovery of elective waiting lists following COVID-19: scenario projections for England
Sex steroid hormones and risk of breast cancer incidence and survival: A two-sample Mendelian randomization study