Instruct: Identify the main category of a Medrxiv paper based on its title.
Query: The changing impact of vaccines in the COVID-19 pandemic
Opportunities to catalyze improved healthcare access in pluralistic systems: a cross-sectional study in Haiti
Detection of persistent SARS-CoV-2 IgG antibodies in oral mucosal fluid and upper respiratory tract specimens following COVID-19 mRNA vaccination
COVID-19 infection and subsequent thromboembolism: A self-controlled case series analysis of a population cohort
Life course traumas, phenotypic aging, and cardiovascular disease: retrospective analysis of 104,939 UKB participants
Colorectal Cancer Disparities: A Systematic Review and Meta-Analysis
Generalized Radiograph Representation Learning via Cross-supervision between Images and Free-text Radiology Reports
Discrepancies in the detection of SARS-CoV-2 by qRT-PCR are dependent on the target gene used for its amplification: Implications in the diagnosis of clinical infection
COVID-19 Test Positivity Rate as a marker for hospital overload
Maori and Pacific People in New Zealand have higher risk of hospitalisation for COVID-19
The Effect of NFL and NCAA Football Games on the Spread of COVID-19 in the United States: An Empirical Analysis
Vaccine effectiveness and duration of protection of Comirnaty, Vaxzevria and Spikevax against mild and severe COVID-19 in the UK
Prevalence and incidence of stress, depression, and anxiety symptoms among Brazilians in quarantine across the early phases of the COVID-19 crisis
Statistical tests for heterogeneity of clusters and composite endpoints
An MRI-based Deep Learning Model to Predict Parkinson Disease Stages
Increased serum thromboxane A2 and prostacyclin but lower complement C3 and C4 levels in COVID-19: associations with chest CT-scan anomalies and lowered peripheral oxygen saturation.
Unified platform for genetic and serological detection of COVID-19 with single-molecule technology
Emergence of multiple SARS-CoV-2 mutations in an immunocompromised host
Sex-specific differences in resting-state functional brain activity in pediatric concussion.
Validation of diagnostic nomograms based on CE-MS urinary biomarkers to distinguish clinically significant prostate cancer
Impact of biologics and small molecules for Inflammatory Bowel Disease on COVID-19 Related Hospitalization: A Systematic Review and Meta-analysis
Microbiome profiles are associated with cognitive functioning in 45-month-old children
Wastewater SARS-CoV-2 Concentration and Loading Variability from Grab and 24-Hour Composite Samples
The Report on China-Spain Joint Clinical Testing for Rapid COVID-19 Risk Screening by Eye-region Manifestations
CAR+ and CAR- T cells differentiate into an NK-like subset that is associated with increased inflammatory cytokines following infusion
Risk, clinical course and outcome of ischemic stroke in patients hospitalized with COVID-19: a multicenter cohort study