Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Monitoring occurrence of SARS-CoV-2 in school populations: a wastewater-based approach
Dynamics of SARS-CoV-2 with Waning Immunity in the UK Population
Effectiveness of Face Masks in Blocking the Transmission of SARS-CoV-2: a Preliminary Evaluation of Masks Used by SARS-CoV-2-Infected Individuals
A comprehensive analysis of outcomes between COVID-19 patients with an elevated serum lipase compared to those with pancreatitis.
The role of Zambias expansive Inter-agency Coordinating Committee (ICC) in supporting efficient, effective, and evidence-based vaccine and health sector programming
Evaluation of cold pain tolerance in patients with fibromyalgia and opioid use by survival analysis
Detection of SARS-CoV-2 in the air from hospitals and closed rooms occupied by COVID-19 patients
Novel clinical subphenotypes in COVID-19: derivation, validation, prediction, temporal patterns, and interaction with social determinants of health
Evaluation of COVID-19 vaccine breakthrough infections among immunocompromised patients fully vaccinated with BNT162b2
Functional respiratory capacity in the elderly after COVID-19 -- a pilot study
Hospitalized patients with severe COVID-19 during the Omicron wave in Israel - benefits of a fourth vaccine dose
Association of Retinal Age Gap with Arterial Stiffness and Incident Cardiovascular Disease
Beyond Six Feet: A Guideline to Limit Indoor Airborne Transmission of COVID-19
Design and methodological considerations for biomarker discovery and validation in the Integrative Analysis of Lung Cancer Etiology and Risk (INTEGRAL) Program
Tracking white and grey matter degeneration along the spinal cord axis in degenerative cervical myelopathy
College Openings, Mobility, and the Incidence of COVID-19 Cases
The impact of heating, ventilation, and air conditioning design features on the transmission of viruses, including the 2019 novel coronavirus: a systematic review of ventilation and coronavirus
Development of Parkinson's disease and its relationship with incidentally-discovered white matter disease and covert brain infarction in a real world cohort
Injuries and fatalities in Colombian mining emergencies (2005 - 2018)
Attitude and Behavior of People Towards Visiting the Hospital During the Pandemic
Plasmodium vivax malaria serological exposure markers: assessing the degree and implications of cross-reactivity with P. knowlesi
Comparative Effectiveness of BNT162b2 versus Ad26.COV2.S for the Prevention of COVID-19 among Dialysis Patients
Who should be first in line for the COVID-19 vaccine? Surveys in 13 countries of the publics preferences for prioritisation
PRINCIPLE trial demonstrates scope for in-pandemic improvement in primary care antibiotic stewardship
Meta-analytical evidence on mental disorder symptoms during the COVID-19 pandemic in Latin America
Age and smoking predict antibody titres at 3 months after the second dose of the BNT162b2 COVID-19 vaccine