Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Seroprevalence and attainment of herd immunity against SARS CoV-2: A modelling study
Genomic analyses of human adenoviruses unravel novel recombinant genotypes associated with severe infections in pediatric patients
Pediatric intensive care hybrid-style clinical round during COVID-19 pandemic: A pilot study
Beyond Low-Hanging Fruit: A Systematic Approach to Assessing Quality Improvement Needs in Healthcare Practices
A model framework for projecting the prevalence and impact of Long-COVID in the UK
Learnings from the Australian First Few X Household Transmission Project for COVID-19
Aberrant Activation of the Mentalizing Brain System During Eye Gaze Discrimination in Bipolar Disorder
Functional status, mood state, and physical activity among women with post-acute COVID-19 syndrome
Fatigue in Incident Peritoneal Dialysis and Mortality: A Real-World Side-by-Side Study in Brazil and the United States
Effectiveness of vaccination in preventing severe SARS CoV-2 infection in South India-a hospital based cross sectional study
COVID-19 European regional tracker
SARS-CoV-2 Acquisition and Immune Pathogenesis Among School-Aged Learners in Four K-12 Schools
Third doses of COVID-19 vaccines reduce infection and transmission of SARS-CoV-2 and could prevent future surges in some populations
Real-world serologic responses to Extended-interval and Heterologous COVID-19 mRNA vaccination in Frail Elderly - Interim report from a prospective observational cohort study
GWAS and meta-analysis identifies multiple new genetic mechanisms underlying severe Covid-19.
Exploring health in the UK Biobank: associations with sociodemographic characteristics, psychosocial factors, lifestyle and environmental exposures
Real-world data on immune responses following heterologous prime-boost COVID-19 vaccination schedule with Pfizer and AstraZeneca vaccines in England
TerraFlow, A New High Parameter Data Analysis Tool, Reveals Systemic T-cell Exhaustion and Dysfunctional Cytokine Production in Classical Hodgkin Lymphoma
Impact of early life nutrition on gut health in children: A prospective clinical study
Managing the risk of a COVID-19 outbreak from border arrivals
The effects of COVID-19 on European healthcare provision for people with major depressive disorder: a scoping review protocol
Quantifying the dynamics of COVID-19 burden and impact of interventions in Java, Indonesia
Is Mycobacterium avium subspecies paratuberculosis (MAP) associated with Crohn's Disease?
Hepatitis B infection is causally associated with extrahepatic cancers: a Mendelian randomization study
Association between Maternal Depression during Pregnancy and Newborn DNA Methylation
A Methodological Checklist for fMRI Drug Cue Reactivity Studies: Development and Expert Consensus