Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: COVID-19 vaccine effectiveness among healthcare workers in Portugal: results from a hospital-based cohort study, December 2020 to November 2021
Neighbourhood-level risk factors of COVID-19 incidence and mortality
COVID-19 infections in day care centres in Germany: Social and organisational determinants of infections in children and staff in the second and third wave of the pandemic
A Randomized Trial of Wearable UV dosimeter for Skin Cancer Prevention
Quantifying spatial heterogeneity of malaria in the endemic Papua region of Indonesia: analysis of epidemiological surveillance data
Modeling the Effect of Population-Wide Vaccination on the Evolution of COVID-19 Epidemic in Canada
Adverse Events Following SARS-CoV-2 mRNA Vaccination Among Patients with Inflammatory Bowel Disease
Monitoring real-time transmission heterogeneity from Incidence data
SHERLOCK4HAT: a CRISPR-based tool kit for diagnosis of Human African Trypanosomiasis
Loss and Reorganisation of Superficial White Matter in Alzheimer's disease: A Diffusion MRI study
Disentangling Socioeconomic Status and Race in Infant Outcomes: A Neural Network Analysis
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
Google Trends as a method to predict new COVID-19 cases
An evaluation of metabolic, dietetic, and nutritional status reveals impaired outcomes in breast cancer patients undergoing chemotherapy compared with a matched control group.
Influence of sexual risk behaviour and STI co-infection dynamics on the evolution of HIV set point viral load in MSM.
Estimated Veterans Health Administration costs for Alzheimer's disease treatment with aducanumab
Do Pandemics Obey the Elliott Wave Principle of Financial Markets?
Evaluation of serological tests for detecting SARS-CoV-2 antibodies: implementation in assessing post vaccination status
Large-scale silane bead-based SARS-CoV-2 testing of a nursing home in Spain identifies a viral reservoir during lockdown period
Low-dose IL-2 reduces IL-21+ T cells and induces a long-lived anti-inflammatory gene expression signature inversely modulated in COVID-19 patients
Targeted screening for lung cancer with autoantibodies.
Clinical Performance of the cobas Liat SARS-CoV-2 & Influenza AB for the Detection of SARS-CoV-2 in Nasal Samples
SARS-CoV-2 Omicron symptomatic infections in previously infected or vaccinated South African healthcare workers
XTRA Study Protocol: eXploring medical sTudents caReer reAdiness - A cross sectional study in the UK
Evaluating the effect of COVID-19 on dispensing patterns: a national cohort analysis
A cross-sectional study of the relationship between exercise, physical activity, and health-related quality of life among Japanese workers during the COVID-19 pandemic