Instruct: Identify the main category of Medrxiv papers based on the titles.
Query: Waning of Vaccine-Conferred Protection against SARS-CoV-2 Infection: Matched Case-Control Test-Negative Design Study in Two High-Risk Populations
Chronic hepatitis B infection is causally associated with extrahepatic cancers: a Mendelian randomization study
T1/T2 Ratio Imaging Improves Cortical Lesion Contrast in Multiple Sclerosis on 3T MRI
Serological profiles of pan-coronavirus-specific responses in COVID-19 patients using a multiplexed electro-chemiluminescence-based testing platform
Serological Response to BNT162b2 and ChAdOx1 nCoV-19 Vaccines in Patients with Inflammatory Bowel Disease on Biologic Therapies; A Multi-Center Prospective Study
Underlying factors that influence the acceptance of COVID-19 vaccine in a country with a high vaccination rate
Metabolic disorders and the risk of head and neck cancer: a protocol for a systematic review and meta-analysis
A system biology approach identifies candidate drugs to reduce mortality in severely ill COVID-19 patients
To what extent is the altitude at which we live associated with 10-year cardiovascular risk?
Anemia prior to or during COVID-19 is a risk factor for rehospitalization after SARS-CoV-2 clearance
Total Infectomes Characterization of Respiratory Infections in pre-COVID-19 Wuhan, China
High failure rate of ChAdOx1-nCoV19 immunization against asymptomatic infection in healthcare workers during a Delta variant surge: a case for continued use of masks post-vaccination
Population homogeneity for the antibody response to COVID-19 Comirnaty vaccine is only reached after the second dose
Transdiagnostic phenotyping of psychopathology in a help-seeking population (PhenoNetz): a study protocol for an experience sampling study
Clinical manifestations and disease severity of SARS-CoV-2 infection among infants in Canada
State-of-the-Art Risk Models for Diabetes, Hypertension, Visual Diminution, and COVID-19 Severity in Mexico
Modified Preparation Method of Ideal Platelet-Rich Fibrin Matrix (PRFM) from Whole Blood.
Gender Differences in Health Protective Behaviors During the COVID-19 Pandemic in Taiwan: An Empirical Study
Frequency of neurological manifestations in COVID-19: a systematic review and meta-analysis of 350 studies
Phantom-based quantification of the spectral accuracy in dual-layer spectral CT for pediatric imaging at 100 kVp
Auto-Detection and Segmentation of Involved Lymph Nodes in HPV-Associated Oropharyngeal Cancer Using a Convolutional Deep Learning Neural Network
Recovery from severe mental health problems: A systematic review of service user and informal caregiver perspectives
Clinical course and risk factors for in-hospital mortality of 205 patients with SARS-CoV-2 pneumonia in Como, Lombardy Region, Italy
Single Injection Nerve Blocks Plus IV Lidocaine Infusions as an Alternative to Continuous Nerve Blocks for Perioperative Pain Management: A retrospective review.
COVID-19 therapeutics for low- and middle-income countries: a review of re-purposed candidate agents with potential for near-term use and impact
Cross-frequency phase-amplitude coupling in repetitive movements in patients with Parkinson's disease