Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Highly-specific early detection of colorectal cancer by novel non-invasive serum methylation biomarkers
Safety and Immunogenicity of the COVID-19 Vaccine BNT162b2 in Patients Undergoing Chemotherapy for Solid Cancer
Key topics in pandemic health risk communication: A qualitative study of expert opinions and knowledge
Neutralisation of SARS-CoV-2 Delta sub-lineage AY.4.2 and B.1.617.2+E484K by BNT162b2 mRNA vaccine-elicited sera
Clinical implementation and initial experience with a 1.5 Tesla MR-linac for MR-guided radiotherapy for gynecologic cancer: An R-IDEAL stage 1/2a first in humans/feasibility study of new technology implementation
Illusory social agents within and beyond voices: a computational linguistics analysis of the experience of psychosis
Mode of Presentation and Outcomes of COVID-19 Cases in a Tertiary Hospital in Nigeria
Drug repurposing of metformin for Alzheimer disease: Combining causal inference in medical records data and systems pharmacology for biomarker identification
The Choice of Response Alternatives in COVID-19 Social Science Surveys
Assessing sustainability factors for rural sanitation coverage in Kenya, Zambia, Nepal, and Bhutan: A qualitative case study analysis
Long- and short-term effects of cross-immunity in epidemic dynamics
Obesity is associated with an altered baseline and post-vaccination influenza antibody repertoire
COVID-19 vaccine hesitancy January-May 2021 among 18-64 year old US adults by employment and occupation
Acute nasal dryness in COVID-19
Assessing the effectiveness of malaria interventions at the regional level in Ghana using a mathematical modelling Application
A Novel Indicator for COVID-19 Pandemic Assessment and Comparison
Mitigating Covid-19 aerosol infection risk in school buildings: the role of natural ventilation, classroom volume, occupancy and face masks
High-throughput Mutational Surveillance of the SARS-CoV-2 Spike Gene
Bacterial shedding and serologic responses following an outbreak of Salmonella Typhi in an endemic cohort
Short-stay admissions and lower staffing associated with larger COVID-19 outbreaks in Maryland nursing homes
Dynamics of SARS-CoV-2 with Waning Immunity in the UK Population
Detecting in-school transmission of SARS-CoV-2 from case ratios and documented clusters
Vaccination and herd immunity thresholds in heterogeneous populations
Monitoring occurrence of SARS-CoV-2 in school populations: a wastewater-based approach
The feasibility of an objective measure of the parent-child relationship in health visiting practice: assessment of the Maternal Postnatal Attachment Scale.
Increasing Trust in Real-World Evidence Through Evaluation of Observational Data Quality