Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Combining Indoor Positioning Using Wi-Fi Round-trip Time with Dust Measurement in the Field of Occupational Health
Predictors of SARS CoV-2 Infection Among Healthcare Workers: The Impact of Community-Hospital Gradient
Cohort study of Covid-19 vaccine effectiveness among healthcare workers in Finland, December 2020 - October 2021
SARS-CoV-2 reinfections during the first three major COVID-19 waves in Bulgaria
Estimating the asymptomatic proportion of SARS-CoV-2 infection in the general population: Analysis of a nationwide serosurvey in the Netherlands
Non-pharmaceutical interventions and vaccinating school children required to contain SARS-CoV-2 Delta variant outbreaks in Australia: a modelling analysis
IDENTIFICATION OF GENETICALLY RELATED HCV INFECTIONS AMONG SELF-DESCRIBED INJECTING PARTNERSHIPS
Clinical and Genetic Associations of Deep Learning-Derived Cardiac Magnetic Resonance-Based Left Ventricular Mass
Vaccines Elicit Highly Cross-Reactive Cellular Immunity to the SARS-CoV-2 Omicron Variant
Limited genomic reconstruction of SARS-CoV-2 transmission history within local epidemiological clusters
Determinants and trends of COVID-19 vaccine hesitancy and vaccine uptake in a national cohort of U.S. adults: a longitudinal cohort study
Understanding adherence to self-isolation in the first phase of COVID-19 response
Unraveling the COVID-19 hospitalization dynamics in Spain using publicly available data
Corneal cisterns as drainage aqueducts
The usefulness of a quantitative olfactory test for the detection of COVID-19.
Clinical characteristics with inflammation profiling of Long-COVID and association with one-year recovery following hospitalisation in the UK: a prospective observational study
Nutrition Policies in Germany: A Systematic Assessment with the Food Environment Policy Index (Food-EPI)
Leveraging machine learning and self-administered tests to predict COVID-19:An olfactory and gustatory dysfunction assessment through crowd-sourced data in India
Safety and efficacy of Pulmonary physiotherapy in hospitalized patients with severe COVID-19 pneumonia (PPTCOVID): A prospective, randomised, single-blind, controlled trial
Systematically omitting indoor air quality: sub-standard guidance for shelters, group homes and long-term care during the COVID-19 pandemic
Inflammaging in Major Depressive Disorder: Associations between markers of inflammation and brain ageing in depression across two large community-based cohorts
Combined Metabolic Activators accelerates recovery in mild-to-moderate COVID-19
Variant-of-concern-attributable health and health system-related outcomes: a population-level propensity-score matched cohort study
Oral Vitamin D supplementation induces transcriptomic changes in rectal mucosa that are consistent with anti-tumour effects.
Evaluation of the United States COVID-19 Vaccine Allocation Strategy
Age specific COVID-19 undercount in Spain from the regional breakdown of 52-week accumulated mortality rates