Instruct: Identify the main category of Medrxiv papers based on their titles.
Query: Emergence of SARS-CoV-2 variants of concern in the pediatric population of the United States
Short-term drop in antibody titer after the third dose of SARS-CoV-2 BNT162b2 vaccine in adults
Polygenic associations and causal inferences between serum immunoglobulins and amyotrophic lateral sclerosis
Mitigating Covid-19 aerosol infection risk in school buildings: the role of natural ventilation, classroom volume, occupancy and face masks
Effectiveness of COVID-19 vaccines against hospitalization and death in Canada: A multiprovincial test-negative design study
Finding effective therapeutic approaches for motor rehabilitation after stroke: Insights from a thematic analysis
Super-Spreaders Out, Super-Spreading In: The Effects of Infectiousness Heterogeneity and Lockdowns on Herd Immunity
The ferroxidase HEPHaestin in Lung cancer: Pathological Significance and Prognostic Value
Comparing survival in urinary tract cancer patients with various second primary malignancies: A population-based study
Clinical Characteristics and Risk Factors for Myocardial Injury and Arrhythmia in COVID-19 patients
Real-time PCR assay for detection and differentiation of Coccidioides immitis and Coccidioides posadasii from culture and clinical specimens
COVID-19 and pregnancy: An umbrella review of clinical presentation, vertical transmission, and maternal and perinatal outcomes
Monitoring SARS-CoV-2 in wastewater during New York City's second wave of COVID-19: Sewershed-level trends and relationships to publicly available clinical testing data
Detecting eczema areas in digital images: an impossible task?
A Generalizable Data Assembly Algorithm for Infectious Disease Outbreaks
WHO TARGETS FOR CERVICAL CANCER CONTROL BY 2030: A BASELINE ASSESSMENT IN SIX AFRICAN COUNTRIES
THEMIS: A Framework for Cost-Benefit Analysis of COVID-19 Non-Pharmaceutical Interventions
A framework for integrated clinical risk assessment using population sequencing data
The Middle-Out Perspective -- an approach to formalise 'normal practice' in public health advocacy
Willingness to volunteer of medical students during the COVID-19 pandemic: Assessment at a tertiary care hospital in India
Predicting age from 100,000 one week-long 100Hz wrist accelerometer records of physical activity
Risk factors and impacts of child growth faltering in low- and middle-income countries
Indicators of past COVID-19 infection status: Findings from a large occupational cohort of staff and postgraduate research students from a UK university
Analysis of the Factors Affecting the Adoption and Compliance of the NHS COVID-19 Mobile Application
Vaccine safety surveillance using routinely collected healthcare data - An empirical evaluation of epidemiological designs
Workplace risk management for SARS-CoV-2: a three-step early in-tervention strategy for effective containment of infection chains with special regards to virus variants with increased infectivity