Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: Trends of COVID-19 pediatric admissions number during the first 24 weeks of COVID-19 vaccination in Rio de Janeiro, Brazil
Lower Risk of Multisystem Inflammatory Syndrome in Children (MIS-C) with the Delta and Omicron variants of SARS-CoV-2
Anti-SARS-CoV-2 seropositivity among medical students in Copenhagen
Risk factors and impacts of child growth faltering in low- and middle-income countries
Reinfection Rates among Patients who Previously Tested Positive for COVID-19: a Retrospective Cohort Study
Risk Perceptions, Knowledge and Behaviors of General and High-Risk Adult Populations towards COVID-19: A Systematic Scoping Review
How the COVID-19 pandemic is shaping research in Africa: inequalities in scholarly output and collaborations and new opportunities for scientific leadership
Using genomic epidemiology of SARS-CoV-2 to support contact tracing and public health surveillance in rural Humboldt County, California.
A Multidirectional Two-tube Method for Chemical Pleurodesis could improve distribution of the Sclerosing Agent within the Pleural Cavity
The Middle-Out Perspective -- an approach to formalise 'normal practice' in public health advocacy
Determinants of COVID-19 vaccine acceptability in Mozambique: the role of institutional trust
Categorizing ultra-processed food intake in large-scale cohort studies: evidence from the Nurses' Health Studies, the Health Professionals Follow-Up Study, and the Growing Up Today Study
Women's views on accepting COVID-19 vaccination during and after pregnancy, and for their babies: A multi-methods study in the UK.
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
Clinical Metagenomic Sequencing for Species Identification and Antimicrobial Resistance Prediction in Orthopaedic Device Infection
A Comprehensive HPV-STI NGS Assay for Detection of 29 HPV Types and 14 non-HPV Sexually Transmitted Infections
Effects of Confounding Bias in COVID-19 and Influenza Vaccine Effectiveness Test-Negative Designs Due to Correlated Influenza and COVID-19 Vaccination Behaviors
Analyzing the U.S. Post-marketing safety surveillance of COVID-19 vaccines
Monitoring SARS-CoV-2 variants alterations in Nice neighborhoods by wastewater nanopore sequencing
Exposition to airborne SARS-CoV-2 in household and hospitals settings as studied by a vacuum cleaner as a high-powered air sampler
Healthcare-associated COVID-19 in England: a national data linkage study
Childhood meningitis in rural Gambia: 10 years of population-based surveillance
A feasibility study to test a novel approach to dietary weight loss with a focus on assisting informed decision making in food selection
Influence of immunosuppressive regimen on diffusivity and oxygenation of kidney transplants: Analysis of functional MRI data from the randomized ZEUS trial
Reconstructing subdistrict-level population denominators in Yemen after six years of armed conflict and forced displacement
Analysis of the association between TLR2 rs111200466 variants and cervical Cancer susceptibility in Sudanese women