Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Obesity is associated with an altered baseline and post-vaccination influenza antibody repertoire
Short-Term Immune Response After Inactivated SARS-CoV-2 (CoronaVac, Sinovac) And ChAdOx1 nCoV-19 (Vaxzevria, Oxford-AstraZeneca) Vaccinations in Thai Health Care Workers
The fomite contribution to the transmission of COVID-19 in the UK: an evolutionary population estimate
Predicting sex, age, general cognition and mental health with machine learning on brain structural connectomes
Transmission of SARS-CoV-2 in standardised First Few X cases and household transmission investigations: a systematic review and meta-analysis
Childhood malnutrition and bacteraemia at a tertiary hospital in Malawi
Local public health officials and COVID-19: Evidence from China
Automated diagnosis of atrial fibrillation in 24-hour Holter recording based on deep learning：a study with randomized and real-world data validation
Evaluating the impact of keeping indoor dining closed on COVID-19 rates among large US cities: a quasi-experimental design
Development and validation of an electronic health records-based opioid use disorder algorithm by expert clinical adjudication
Efficacy of universal masking for source control and personal protection from simulated cough and exhaled aerosols in a room
Implementation and economic effects of local non-pharmaceutical interventions
Early Epidemiological Evidence of Public Health Value of WA Notify, a Smartphone-based Exposure Notification Tool: Modeling COVID-19 Cases Averted in Washington State
Structural synaptic signatures of Alzheimer's Disease and Dementia with Lewy Bodies in the male brain
A shared genetic signature for common chronic pain conditions and its impact on biopsychosocial traits
Alteration of plasma von Willebrand factor in the treatment of retinal vein occlusion with cystoid macular edema
Adaptation and validation of a French version of the Vaccination Attitudes Examination (VAX) scale
What (if anything) is going on? Examining longitudinal associations between social media use and mental ill-health among young people
Prostate cancer screening in hospitalized patients: Results from the Nationwide Inpatient Sample
Contributions of occupation characteristics and educational attainment to racial/ethnic inequities in COVID-19 mortality
Virtual Trials: Causally-validated treatment effects efficiently learned from an observational cancer registry
Dietary patterns among 13 - 17-years old school adolescents: A national comparison of the three geographical regions in Bolivia
Effect of Adapted Ergometer Setup and Rowing Speed on Lower Extremity Loading in People with and without Spinal Cord Injury
Mitigating isolation: The use of rapid antigen testing to reduce the impact of self-isolation periods
Pre-pandemic cognitive function and COVID-19 mortality: prospective cohort study
A Decision Analytics Model to Optimize Investment in Interventions Targeting the HIV PrEP Cascade of Care