Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Initial vancomycin versus metronidazole for the treatment of first-episode non-severe Clostridioides difficile infection
Omicron (BA.1) SARS-CoV-2 variant is associated with reduced risk of hospitalization and length of stay compared with Delta (B.1.617.2)
Prediction Model for Detection of Sporadic Pancreatic Cancer (PRO-TECT) in a Population-Based Cohort Using Machine Learning and Further Validation in a Prospective Study
Use of therapeutic play in nursing care for school-age children: a scoping review
Vaccine Effectiveness against Referral to Hospital and Severe Lung Injury Associated with COVID-19: A Population-based Case-control Study in St. Petersburg, Russia
Runners with chronic mid-portion Achilles tendinopathy have greater Triceps surae intracortical inhibition than healthy controls
COVID-19 Vaccination Prioritization Based on Cardiovascular Risk Factors and Number-Needed-to-Vaccinate to Prevent Death
The valuation of outcomes for the temporary and chronic health states associated with Chlamydia trachomatis infection
Relationship among work-treatment balance, job stress, and work engagement in Japan: A cross-sectional study
Nested pool testing strategy for the reliable identification of individuals infected with SARS-CoV-2
Quantifying Epistemic and Aleatoric Uncertainty in 3D U-Net Segmentation
Synergetic measures needed to control infection waves and contain SARS-CoV-2 transmission
People with HIV Have Higher Risk of COVID-19 Diagnosis but Similar Outcomes than the General Population
The development of the Supplemental Nutrition Assistance Program enrollment accessibility (SNAP-Access) score
JIA patient T cells differentiate into Th1, Th17 and Th1.17 effector cells under Th1 polarizing conditions
The influence of sex, gender, age, and ethnicity on psychosocial factors and substance use throughout phases of the COVID-19 pandemic
SARS-CoV-2 Testing Strategies for Outbreak Mitigation in Vaccinated Populations
Mental Health of HBCU College Students during the COVID-19 Pandemic
Geographical concentration of COVID-19 cases by social determinants of health in 16 large metropolitan areas in Canada - a cross-sectional study
Multiplex SARS-CoV-2 Genotyping PCR for Population-Level Variant Screening and Epidemiologic Surveillance
Selective ensemble methods for deep learning segmentation of major vessels in invasive coronary angiography
Excess Mortality by Suicide associated with COVID-19 in Japan through August, 2021
Patterns and Changes in Expectation of Life at Birth in India: 1998-2017
Mouth-rinses and SARS-CoV-2 viral load in saliva: A living systematic review
Effects of drinking water, sanitation, handwashing, and nutritional interventions on immune status in young children: a cluster-randomized controlled trial in rural Bangladesh
Spatial Prevalence and Determinants of Malaria among under-five Children in Ghana