Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Rapid rise in paediatric COVID-19 hospitalisations during the early stages of the Omicron wave, Tshwane District, South Africa
Point-of-care testing in a high-income country paediatric emergency department: a qualitative study in Sweden
Diurnal brain temperature rhythms and mortality after brain injury: a prospective and retrospective cohort study
Language Matters - Representations of the term heart failure in English discourse: a large-scale linguistic study
Baptism of fire: Modeling the effects of prescribed fire on tick-borne disease
Effects of Resistant Starch on Symptoms, Fecal Markers and Gut Microbiota in Parkinson's Disease -- The RESISTA-PD Trial
Viral Cultures for Assessing Fomites Transmission of SARS-CoV-2: a Systematic Review Protocol
Coughs, Colds and "Freshers' Flu" Survey in the University of Cambridge, 2007-2008
Healthcare workers perceptions and medically approved COVID-19 infection risk: understanding the mental health dimension of the pandemic. A German hospital case study
A log-odds system for waning and boosting of COVID-19 vaccine effectiveness
Early detection of SARS-CoV-2 variants using traveler-based genomic surveillance at four US airports, September 2021- January 2022
Estimated Spike Evolution and Impact of Emerging SARS-CoV-2 Variants
Retrospective Exploratory Analysis of Task-Specific Effects on Brain Activity after Stroke
Multi-trait genome-wide association study identifies new loci associated with sleep apnoea risk
Anticoagulation trends in adults aged 65 and over with atrial fibrillation; a cohort study.
Attention Deficit Hyperactivity Disorder Symptoms and Brain Morphology: Examining Confounding Bias
Structured Understanding of Assessment and Plans in Clinical Documentation
Plasma oxylipin levels may predict Covid-19 patient outcomes. An observational and retrospective study.
Viral load dynamics of SARS-CoV-2 Delta and Omicron variants following multiple vaccine doses and previous infection
Does pre-infection stress increase the risk of long COVID? Longitudinal associations between adversity worries and experiences in the month prior to COVID-19 infection and the development of long COVID and specific long COVID symptoms
The Effect of Headgear Use on Concussion Injury Rates in Girls' High School Lacrosse
Analysis of the metabolic syndrome and its association with cART in HIV positive individuals receiving various cART regimens with review of literature.
Influence of the hospital upon the outcomes of gastrointestinal fistulas: results of a multi-continent, multi-national, multi-center cohort
Non-replication of structural brain changes from Mindfulness-Based Stress Reduction: Two combined randomized controlled trials
The impacts of COVID-19 vaccine timing, number of doses, and risk prioritization on mortality in the US
Sero-surveillance for IgG to SARS-CoV-2 at antenatal care clinics in three Kenyan referral hospitals: repeated cross-sectional surveys 2020-21