Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: SARS-CoV-2 seroprevalence in Delhi, India: September October 2021: a population based seroepidemiological study
COVID-19 risk perceptions of social interaction and essential activities and inequity in the United States: Results from a nationally representative survey
Sub-diagnostic effects of genetic variants associated with autism
Medical brain drain from Western Balkan and Croatia to Germany and Austria: an approach to the digital demography
Competing Health Risks Associated with the COVID-19 Pandemic and Response: A Scoping Review
Speech pause distribution as an early marker for Alzheimer's disease
The influence of genetic predisposition and physical activity on risk of Gestational Diabetes Mellitus in the nuMoM2b cohort
Favourable vaccine-induced SARS-CoV-2 specific T cell response profile in patients undergoing immune-modifying therapies
Understanding microvascular thrombosis in COVID-19 via massive single-cell imaging of circulating platelets
Genome-wide association study of nociceptive musculoskeletal pain treatment response in UK Biobank
Prioritizing allocation of COVID-19 vaccines based on social contacts increases vaccination effectiveness
The course of COVID-19 in patients with chronic spontaneous urticaria receiving omalizumab treatment
A genomic epidemiology study of multidrug-resistant Escherichia coli, Klebsiella pneumoniae and Acinetobacter baumannii in two intensive care units in Hanoi, Vietnam
Interim Report: Safety And Immunogenicity Of An Inactivated Vaccine Against Sars-Cov-2 In Healthy Chilean Adults In A Phase 3 Clinical Trial
Edoxaban versus warfarin on stroke risk in patients with atrial fibrillation: a territory-wide cohort study
Novel COVID-19 phenotype definitions reveal phenotypically distinct patterns of genetic association and protective effects
Changes in utilization and outcomes of mechanical ventilation of COVID-19 during the course of the pandemic in Germany in 2020: an observational study of 7,490 patients
Predictions of arrhythmic, heart failure and mortality outcomes in pericarditis using automatic electrocardiogram analysis
Fundamental limits on inferring epidemic resurgence in real time
Analysis of the Dynamics, Outcome, and Prerequisites of the first German SARS-CoV-2 Superspreading Event
HIV status alters disease severity and immune cell responses in beta variant SARS-CoV-2 infection wave
Emotional responses toward COVID-19: A longitudinal assessment of age differences
Estimates of global SARS-CoV-2 infection exposure, infection morbidity, and infection mortality rates
Top-down inhibition of irrelevant information indexed by alpha rhythms is disrupted in migraine
Smelling Household-Odorants Effectively Screens for COVID-19
Ruxolitinib versus Dexamethasone in Hospitalized Adults with Covid-19: multicenter matched-controlled study