Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: COVID-19 Vaccine Effectiveness against the Omicron BA.2 variant in England
Could Deficiencies in South African Data Be the Explanation for Its Early SARS-CoV-2 Peak?
Telomere shortening as a stress biomarker in children and adolescents affected by natural disasters.
Motivators and barriers to research participation for individuals with cerebral palsy and their families
Single-Molecule Detection of SARS-CoV-2 by Plasmonic Sensing of Isothermally Amplified Nucleic Acids
Applying a genetic risk score for prostate cancer to men with lower urinary tract symptoms in primary care to predict prostate cancer diagnosis: a cohort study in the UK Biobank
COVID-19 Vaccine Hesitancy Among Patients with Inflammatory Bowel Disease on Biologic Therapies; A cross-sectional study.
Safety and feasibility of research lumbar puncture in Huntington's disease: the HDClarity cohort and bioresource
The inactivated NDV-HXP-S COVID-19 vaccine induces a significantly higher ratio of neutralizing to non-neutralizing antibodies in humans as compared to mRNA vaccines
Model-based estimates of deaths averted and cost per life saved by scaling-up mRNA COVID-19 vaccination in low and lower-middle income countries in the COVID-19 Omicron variant era
Tryptophan and arginine metabolism is significantly altered at the time of admission in hospital for severe COVID-19 patients: findings from longitudinal targeted metabolomics analysis
Synchronizability predicts effective responsive neurostimulation for epilepsy prior to treatment
Current prices versus minimum costs of production for CFTR modulators
Snotwatch COVID-Toes: An ecological study of chilblains and COVID-19 diagnoses in Victoria, Australia
Daily tenofovir disoproxil fumarate/emtricitabine and hydroxychloroquine for pre-exposure prophylaxis of COVID-19: a double-blind placebo controlled randomized trial in healthcare workers
Glaucoma patient screening from online retinal fundus images via Artificial Intelligence
Nanopore 16S rRNA sequencing reveals alterations in nasopharyngeal microbiome and enrichment of Mycobacterium and Mycoplasma in patients with COVID 19
Have deaths of despair risen during the COVID-19 pandemic? A rapid systematic review
Evaluating the effectiveness of rapid SARS-CoV-2 genome sequencing in supporting infection control teams: the COG-UK hospital-onset COVID-19 infection study
Myeloid-derived suppressor cells in the blood of Iranian COVID-19 patients
Crowd Annotations Can Approximate Clinical Autism Impressions from Short Home Videos with Privacy Protections
High vaccine effectiveness against COVID-19 infection and severe disease among residents and staff of long-term care facilities in Norway, November - June 2021
SARS-CoV-2 Omicron variant: healthcare workers' perceptions and beliefs of vaccine effectiveness and advocacy: a national survey during the first week of the World Health Organization variant alert
A randomised clinical trial of azithromycin versus standard care in ambulatory COVID-19 - the ATOMIC2 trial
Genetic Insight into Birt-Hogg-Dube syndrome in Indian patients reveals novel mutations in FLCN
Screening for safe opening of universities under Omicron and Delta variants of COVID-19: When less is more