Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Vaccine effectiveness of Ad26.COV2.S against symptomatic COVID-19 and clinical outcomes in Brazil: a test-negative study design
Anatomy of digital contact tracing: role of age, transmission setting, adoption and case detection
Comparative Analysis of Major Incident Triage Tools in Children. A UK population based analysis.
Short-term improvement of mental health after a COVID-19 vaccination
Indications that Stockholm has reached herd immunity, given limited restrictions, against several variants of SARS-CoV-2
Opportunistic Assessment of Ischemic Heart Disease Risk Using Abdominopelvic Computed Tomography and Medical Record Data: a Multimodal Explainable Artificial Intelligence Approach
The novel cardiokine GDF3 predicts adverse fibrotic remodeling post-myocardial infarction
Effectiveness of the Covid-19 vaccine in preventing infection in dental practitioners: results of a cross-sectional questionnaire based survey
Early neurodevelopmental problems and risk for avoidant/restrictive food intake disorder (ARFID) in the general child population: a Japanese birth cohort study
Designing a Clerkship Curriculum for Medical Students in Clinical and Medical Informatics in the Electronic Medical Record Era
Infection with Omicron variant generates neutralizing antibodies to BA.1 and BA.2 sub-lineages and induces higher levels of cross-neutralizing antibodies to Delta variant
An optimized flow cytometry protocol for simultaneous detection of T cell activation induced markers and intracellular cytokines: application to SARS-Cov-2 vaccinated individuals
Pneumococcal Vaccination Coverage and Uptake Among Adults in Switzerland: A Nationwide Cross-Sectional Study of Vaccination Records
BIOCHEMICAL AND HAEMATOLOGICAL CHANGES ASSOCIATED WITH TRANSPLACENTAL CONGENITAL MALARIA IN KOGI STATE, NORTH CENTRAL NIGERIA
A protein signature associated with active tuberculosis identified by plasma profiling and network-based analysis
SARS-CoV-2 neutralization after mRNA vaccination and variant breakthrough infection
Evaluation of Urine SARS-COV-2 RT-PCR as a predictor of Acute Kidney Injury and disease severity in critical COVID-19 patients
Genetic, structural and clinical analysis of spastic paraplegia 4
Mathematical modeling suggests pre-existing immunity to SARS-CoV-2
No support for oxytocin modulation of reward-related brain function in autism: evidence from a randomized controlled trial
Lesion Normalization and Supervised Learning in Post-Traumatic Seizure Classification with Diffusion MRI
Physiotherapists perceived role in managing anxiety in patients with Relapsing-Remitting Multiple Sclerosis: a mixed-methods study.
SARS-CoV-2 induces a durable and antigen specific humoral immunity after asymptomatic to mild COVID-19 infection
Harmonization of Multi-Center Diffusion Tensor Tractography in Neonates with Congenital Heart Disease: Optimizing Post-Processing and Application of ComBat
Combination of Mifepristone and Methotrexate for the Treatment of Ectopic Pregnancy: A Systematic Review Protocol
A Single Dose of COVID-19 mRNA Vaccine Induces Airway Immunity in COVID-19 Convalescent Patients