Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Pre-existing antibodies targeting a dominant linear antibody epitope on SARS-CoV-2 S2 cross-reacted with commensal gut bacteria and shaped immune responses elicited by a candidate vaccine
Activity of convalescent and vaccine serum against a B.1.1.529 variant SARS-CoV-2 isolate
Unified real-time environmental-epidemiological data for multiscale modeling of the COVID-19 pandemic
Effects of Dipeptidyl Peptidase-4 Inhibitors and Sulfonylureas on Cognitive and Physical Function in Nursing Home Residents
Factors Associated with Serious Psychological Distress during the COVID-19 Pandemic in Japan
Sex differences in the genetic regulation of the blood transcriptome response to glucocorticoid receptor activation
Balanced chromosomal rearrangements offer insights into coding and noncoding genomic features associated with developmental disorders
Donor race has no role in predicting allograft and patient survival among kidney transplant recipients
Normative cognitive scores in western India, stratified by age, rurality, cognitive domains, and psychiatric comorbidity.
Twins in Guinea-Bissau have a 'thin-fat' body composition compared to singletons
Impact of the Covid-19 pandemic on the mental health and wellbeing of adults with mental health conditions in the UK: A qualitative interview study
Humoral and T-cell immune response after three doses of mRNA SARS-CoV-2 vaccines in fragile patients: the Italian VAX4FRAIL study
The herbal combination of Sugarcane, Black Myrobalan, and mastic as a supplementary treatment for COVID-19: a randomized clinical trial
Estimating the genetically predicted effects of lifestyle risk factors, educational attainment and Alzheimer's disease liability on weight change during midlife
Does one exercise a day make the knee stronger and keep surgery away? A randomized dose-response trial of home-based knee-extensor exercise in patients eligible for knee replacement (the QUADX-1 trial).
Grandparental Childcare During the Pandemic and Effects on Mental Health: Evidence From England
Extending non-targeted exposure discovery of environmental chemical exposures during pregnancy and their association with pregnancy complications, a cross-sectional study
Burden of Depressive and Anxiety Disorders in Nepal, 1990-2017: An Analysis of Global Burden of Disease Data
Polygenic basis and biomedical consequences of telomere length variation
Children develop strong and sustained cross-reactive immune responses against spike protein following SARS-CoV-2 infection
Characteristics associated with COVID-19 vaccine uptake among adults in England (08 December to 17 May 2021)
Prevalence of Migraine and its associated factors among medical students of Bangladesh: A cross sectional study
How the COVID-19 pandemic is shaping research in Africa: inequalities in scholarly output and collaborations and new opportunities for scientific leadership
Use of Ketamine Infusions for Treatment of Complex Regional Pain Syndrome: A Systematic Review
Risk of Hospitalization, severe disease, and mortality due to COVID-19 and PIMS-TS in children with SARS-CoV-2 infection in Germany
A 2SIR-VD Model for Optimizing Geographical COVID-19 Vaccine Distribution in the Philippines