Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: The Emergence of SARS-CoV-2 Variant Lambda (C.37) in South America
Development, validation, and evaluation of prediction models to identify individuals at high risk of lung cancer for screening in the English primary care population using the QResearch database: research protocol and statistical analysis plan
Does the occurrence of a severe asthma exacerbation change the rate of subsequent events?
Common Factors in Serious Case Reviews of Child Maltreatment where there is a Medical Cause of Death: Qualitative Thematic Analysis
Electrical Stimulation and Time to Radiographic Healing of Acute Fractures: A Systematic Review and Meta-Analysis
The association of smoking status with hospitalisation for COVID-19 compared with other respiratory viruses a year previous: A case-control study at a single UK National Health Service trust
Model-based estimation of transmissibility and reinfection of SARS-CoV-2 P.1 variant
Health indicators as a measure of individual health status: public perspectives
Longitudinal analysis of antibody trajectories and humoral responses to a third dose of mRNA vaccines against SARS-CoV-2 in patients with a history of anti-CD20 therapy (RituxiVac 2.0)
Predicting hospitalizations related to ambulatory care sensitive conditions with machine learning for population health planning: derivation and validation cohort study
Discrepancies in the detection of SARS-CoV-2 by qRT-PCR are dependent on the target gene used for its amplification: Implications in the diagnosis of clinical infection
Sex differences in the genetic regulation of the blood transcriptome response to glucocorticoid receptor activation
Artificial Intelligence in laryngeal endoscopy: Systematic Review and Meta-Analysis
Risk-stratified lifestyle intervention to prevent type 2 diabetes
The Microbiome in Adult Acute Appendicitis
Patient-specific analysis of bicuspid aortic valve hemodynamics using a fully coupled fluid-structure interaction (FSI) model
Pooling-in-a-pod: A Strategy for COVID-19 Testing to Facilitate Safe Return to School
Preterm birth is associated with immune dysregulation which persists in infants exposed to histologic chorioamnionitis
Change in the trend of long-term care service usage following COVID-19 pandemic in Japan: a survey using nationwide statistical summary in 2018-2021
Accuracy of Attestation Among Mohs and Dermatologic Surgery Diplomates
The global distribution of COVID-19 vaccine: The role of macro-socioeconomics measures
Establishment and validation of pre-therapy cervical vertebrae muscle quantification as a prognostic marker of sarcopenia in head and neck patients receiving definitive cancer surgery
Results Availability and Timeliness of Registered COVID-19 Clinical Trials: A Cross-Sectional Study
A linked mixture model of coronary atherosclerosis
Virtual Trials: Causally-validated treatment effects efficiently learned from an observational cancer registry
Distance from home to motor vehicle crash location: Implications for license restrictions among medically-at-risk older drivers