Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Early assessment of the clinical severity of the SARS-CoV-2 Omicron variant in South Africa
Continuing COVID-19 Vaccination of Front-Line Workers in British Columbia with the AstraZeneca Vaccine: Benefits in the Face of Increased Risk for Prothrombotic Thrombocytopenia
Randomized controlled trial of gut decontamination in pediatric patients undergoing allogeneic hematopoietic stem cell transplantation
Comparative immunogenicity of heterologous versus homologous 3rd SARS-CoV-2 vaccine doses in kidney transplant recipients
Uncovering Survivorship Bias in Longitudinal Mental Health Surveys
Association between prenatal alcohol exposure and children's facial shape. A prospective population-based cohort study
A demonstration of cone function plasticity after gene therapy in achromatopsia
Depression during the COVID-19 pandemic amongst residents of homeless shelters in France.
Temperature at conception and pregnancy loss in rural KwaZulu-Natal Province, South Africa: Implications for climate change policy in sub-Saharan African settings
Longitudinal trends and risk factors for depressed mood among Canadian adults during the first wave of COVID-19
Correlation of SARS-CoV-2 serology and clinical phenotype amongst hospitalised children in a tertiary children's hospital in India
Elevated fecal mitochondrial DNA from symptomatic norovirus infections suggests potential health relevance of human mitochondrial DNA in fecal source tracking
COVID-19 Pandemic Impact on Sexually Transmitted Infection Testing in a College Setting
Developing a Community Engaged Sickle Cell Disease Center: An Initial Data Analysis of Healthcare Utilization Rates and Perspectives of Key Informants.
An Extended Susceptible-Exposed-Infected-Recovered (SEIR) Model with Vaccination for Forecasting the COVID-19 Pandemic in Sri Lanka
Social and emotional characteristics of girls and young women with DDX3X-linked intellectual disability: A descriptive and comparative study
Risk factors for SARS-CoV-2 infection after primary vaccination with ChAdOx1 nCoV-19 or BNT1262b2 and after booster vaccination with BNT1262b2 or mRNA-1273: a population-based cohort study (COVIDENCE UK)
Emergence and Spread of the SARS-CoV-2 Omicron Variant in Alberta Communities Revealed by Wastewater Monitoring
A causal inference approach for estimating effects of non-pharmaceutical interventions during Covid-19 pandemic
Data-Driven Real-Time Strategic Placement of Mobile Vaccine Distribution Sites
Brain Functional Connectivity Scans, Acquired Years Before the Pandemic, Predict COVID-19 Infections in Older Adults: Data From 3,662 Participants
Prevalence and time trend of congenital heart defects: a registry-based study in Iran
Exploration of interethnic variation and repurposed drug efficacy in the treatment of SARS-CoV-2 Infection (COVID-19)
Effect of vaccination on transmission of COVID-19: an observational study in healthcare workers and their households
Gut Bacterial Microbiome Profiles Associated with Colorectal Cancer Risk: A Systematic Review and Meta-Analysis
Individualizing deep dynamic models for psychological resilience data