Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Significant Disruptions in the International Incidence of Hepatitis Delta Virus
mRNA Vaccine Effectiveness against COVID-19 among Symptomatic Outpatients Aged >=16 Years in the United States, February to May 2021
Performance of Heart Failure Clinical Prediction Models: A Systematic External Validation Study
Impact assessment of mobility restriction, testing, and vaccination on the COVID-19 pandemic in India
Innovative Randomized Phase 1 Study and Dosing Regimen Selection to Accelerate and Inform Pivotal COVID-19 Trial of Nirmatrelvir
Evolution of synchronous bilateral breast cancers provide insights into interactions between host, tumor and immunity.
Early assessment of the clinical severity of the SARS-CoV-2 Omicron variant in South Africa
Anemia is a risk factor for rehospitalization after SARS-CoV-2 clearance
How well do face masks protect the wearer compared to public perceptions?
Epithelial-to-mesenchymal transition lowers the cholesterol pathway, which influences colon tumors differentiation.
Delirium due to hip fracture is associated with activated immune-inflammatory pathways and a reduction in negative immunoregulatory mechanisms.
Positive association between country-level screening rates for chlamydia and gonorrhea and self-reported diagnoses in MSM: an ecological analysis
Alcohol consumption and telomere length: observational and Mendelian randomization approaches
Mechanistic modeling of SARS-CoV-2 immune memory, variants, and vaccines
Health impact and cost of COVID-19 prophylaxis with monoclonal antibodies
Single-Cell RNA Sequencing Reveals the Altered Landscape of Immune Cells in Immune Checkpoint Inhibitor Related Myocarditis
Early dynamics of circulating tumor DNA predict chemotherapy responses for patients with esophageal cancer
Patient trajectories among hospitalised COVID-19 patients vaccinated with an mRNA vaccine in Norway: a register-based cohort study
Resurgence of SARS-CoV-2 in India: Potential role of the B.1.617.2 (Delta) variant and delayed interventions
Exploring the Temporal Dynamics of County-Level Vulnerability Factors on COVID-19 Outcomes
The "Great Lockdown": Inactive Workers and Mortality by Covid-19
Sars-Cov-2 antibody titer 3 months post-vaccination is affected by age, gender, smoking and vitamin D.
Experimental efficacy of the face shield and the mask against emitted and potentially received particles
Adolescent autism and autoimmune diagnoses linked to infant gut bacteria whose prevalence is associated with at-risk genetics and/or diet
The Anorexia Nervosa Care Pathway: Closing the Treatment Gap to Improve Care for Patients Admitted to Medical Hospitals
Modern lineages of Mycobacterium tuberculosis were recently introduced in western India and demonstrate increased transmissibility