Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Ethnic disparities in hospitalisation and hospital-outcomes during the second wave of COVID-19 infection in east London
Impact of SARS-CoV-2 vaccination of children ages 5-11 years on COVID-19 disease burden and resilience to new variants in the United States, November 2021-March 2022: a multi-model study
Responsive caregiving, opportunities for early learning, and children's safety and security during COVID-19: A rapid review
Risk of COVID-19 Reinfection and Vaccine Breakthrough Infection, Madera County, California, 2021
Characteristics of Patients with Hematologic Malignancies Without Seroconversion Post-COVID19 Third Vaccine Dosing
Characterising within-hospital SARS-CoV-2 transmission events: a retrospective analysis integrating epidemiological and viral genomic data from a UK tertiary care setting across two pandemic waves
Grey and white matter volume changes after preterm birth: A meta-analytic approach
MFDNN: Multi-channel feature deep neural network algorithm to identify Covid19 chest X-ray images
Projected health impact of post-discharge malaria chemoprevention among children under the age of five years with severe malarial anaemia in Africa: a modelling analysis
KAP survey of practicing doctors on antimicrobial stewardship based on openWHO course
Development of machine learning models for the prediction of complications after colonic, colorectal and small intestine anastomosis in psychiatric and non-psychiatric patient collectives (P-Study)
SARS-CoV-2 evolution and immune escape in immunocompromised patients treated with exogenous antibodies
The nature and extent of enterprise virtual care physician services in Canada: an environmental scan
Early Stopping in Experimentation with Real-time Functional Magnetic Resonance Imaging Using the Sequential Probability Ratio
Understanding the Puzzle of Primary Health-care Use: Evidence from India
Mathematical modelling of COVID-19 vaccination strategies in Kyrgyzstan
Early detection of acute kidney injury in critically ill children: Predictive value of renal arterial Doppler assessment
Neutralization profile of Omicron variant convalescent individuals
COVID-19 Acceleration and Vaccine Status in France - Summer 2021
mRNA Booster Vaccines Elicit Strong Protection Against SARS-CoV-2 Omicron Variant in Cancer Patients
Estimated Spike Evolution and Impact of Emerging SARS-CoV-2 Variants
Nationwide surveillance of methicillin-resistant Staphylococcus aureus isolated from bloodstream infections in Japan
Evaluating Semantic Similarity Methods for Comparison of Text-derived Phenotype Profiles
Natural Trajectory of Recovery of COVID-19 Associated Olfactory Loss
Poor antigen-specific responses to the second BNT162b2 mRNA vaccine dose in SARS-CoV-2-experienced individuals
Three-dose mRNA-1273 vaccination schedule: sufficient antibody response in majority of immunocompromised hematology patients