Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Cross-neutralizing activity against SARS-CoV-2 variants in COVID-19 patients: Comparison of four waves of the pandemic in Japan
Nipah virus outbreak in Kerala state, India amidst of COVID-19 pandemic
Impact on Mental Health of students due to restriction caused by COVID-19 pandemic: Cross-sectional study
Real-time monitoring of the effectiveness of six COVID-19 vaccines in Hungary in 2021 using the screening method
Audiometric profiles and patterns of benefit. A data-driven analysis of subjective hearing difficulties and handicaps.
Impact of social support, loneliness & social isolation on sustained physical activity during the COVID-19 pandemic
Fifteen Days in December: Capture and Analysis of Omicron-Related Travel Restrictions
Interpretation of mendelian randomization using one measure of an exposure that varies over time.
Topological data analysis identifies emerging adaptive mutations in SARS-CoV-2
The innate and adaptive immune landscape of SARS-CoV-2-associated Multisystem Inflammatory Syndrome in Children (MIS-C) from acute disease to recovery.
Epidemiological analysis of 869,220 varicose vein surgeries over 12 years in Brazil: trends, costs and mortality rate.
Likelihood of being Physically Inactive from a Nationally Representative sample of Autistic Children
Comparison of procedures performed and costs between an outsourced dental health plan with fee-for-service payment and an evidence-based, in-house dental health service with salaried professionals.
Cesarean section prevalence at a baby-friendly hospital in southern Brazil: current context in the face of COVID-19
Experimental Methods of Investigating Airborne Indoor Virus-Transmissions Adapted to Several Ventilation Measures
Final sizes and durations of new COVID-19 pandemic waves in Poland and Germany predicted by generalized SIR model
Prevalence and correlates of SARS-CoV-2 seropositivity among people who inject drugs in the San Diego-Tijuana border region
Relative humidity predicts day-to-day variations in COVID-19 cases in the city of Buenos Aires
Anxiety and Depression among Medical Doctors in Catalonia, Italy, and the UK during the COVID-19 Pandemic
The implementation of a virtual ward using digital solutions informing community clinicians in early supported discharge of patients with SARS-Cov2 respiratory symptoms from an acute hospital setting
TARGET-HF: Developing a model for detecting incident heart failure among symptomatic patients in general practice using routine health care data
Optimizing COVID-19 control with asymptomatic surveillance testing in a university environment
Wearable alcohol monitors for alcohol use data collection among college students: feasibility and acceptability in a pilot study
Effectiveness, Explainability and Reliability of Machine Meta-Learning Methods for Predicting Mortality in Patients with COVID-19: Results of the Brazilian COVID-19 Registry
Deep learning-based detection and segmentation of diffusion abnormalities in acute ischemic stroke
Functional respiratory capacity in the elderly after COVID-19 -- a pilot study