Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Of masks and methylene blue - the use of methylene blue photochemical treatment to decontaminate surgical masks contaminated with a tenacious small non-enveloped norovirus
Evolution of antibodies against SARS-CoV-2 over seven months: experience of the Nationwide Seroprevalence ENE-COVID Study in Spain
''Time does not heal all wounds'': Sexual victimisation is associated with depression, anxiety and PTSD in old age
Increasing trends in mental health problems among Chinese young adolescents: results from repeated cross-sectional data in Changsha 2016-2020
On The Dynamics of Interstate Diffusion of Firearm Violence and Impact of Firearm Regulations
Analysis of key factors of a SARS-CoV-2 vaccination program: A mathematical modeling approach
COVID-19 transmission risk factors
Using Mobile Phone-based Text Message to Recruit Representative Samples: Assessment of a Cross-Sectional Survey about the COVID-19 Vaccine Hesitation.
Women in Health Care Experiencing Occupational Stress and Burnout during COVID-19: A Review
Overprotection and overcontrol in childhood: An evaluation on reliability and validity of 33-item Expanded Childhood Trauma Questionnaire (CTQ-33), Chinese version
Fat-enlarged Axillary Lymph Nodes are Associated with Node-Positive Breast Cancer in Obese Patients
Comparing mental health trajectories of four different types of key workers with non-key workers: A 12-month follow-up observational study of 21,874 adults in England during the COVID-19 pandemic
Digitizing Non-Invasive Neuromodulation Trials: Scoping Review, Process Mapping, and Recommendations from a Delphi Panel
The modified COVID-19 Yorkshire Rehabilitation Scale (C19-YRSm) patient-reported outcome measure for Long Covid or Post-COVID syndrome
Time-specific effects of a multifaceted intervention on accelerometer-measured physical activity in primary school children: A cluster-randomized controlled trial
Improving air quality and health in Northern Italy: limits and perspectives
Emergence of SARS-CoV-2 Alpha (B.1.1.7) variant, infection rates, antibody seroconversion and seroprevalence rates in secondary school students and staff: active prospective surveillance, December 2020 to March 2021, England
Forecasting COVID-19 Spreading in Canada using Deep Learning
The impact of the first wave of COVID-19 on those with lifelong conditions: a case study of congenital heart disease
Evaluation of gonadal function in transfusion-dependent β-thalassemia patients of Bangladesh
Forecasting the Spread of the COVID-19 Epidemic in Lombardy: A Dynamic Model Averaging Approach
Early microbiome and metabolome signatures in pediatric patients undergoing allogeneic hematopoietic cell transplantation
Best practices for multi-ancestry, meta-analytic transcriptome-wide association studies: lessons from the Global Biobank Meta-analysis Initiative
Comparing Interventions Aimed at Improving Influenza Vaccination Coverage Among Vulnerable Populations: A Systematic Review and Meta-Analysis Protocol
Comprehensive care programmes in chronic obstructive pulmonary disease: a systematic review and meta-analysis of randomized controlled trials and real-world studies
Symptoms persisting after hospitalization for COVID-19: 12 months interim results of the COFLOW study