Instruct: Identify the main category of Medrxiv papers based on the titles.
Query: Effectiveness of mRNA and ChAdOx1 COVID-19 vaccines against symptomatic SARS-CoV-2 infection and severe outcomes with variants of concern in Ontario
Racism as a Leading Cause of Death: Measuring Excess Deaths in the US
Longitudinal associations between perceived stress and anhedonia during psychotherapy
The Association Between Alpha-1 Adrenergic Receptor Antagonists and In-Hospital Mortality from COVID-19
Lens Thickness and Its Association with General and Ocular Parameters in Healthy Subjects
Sensitivity of the Elecsys Anti-SARS-CoV-2 immunoassay as an aid in determining previous exposure to SARS-CoV-2
Lessons learned from the resilience of Chinese hospitals to the COVID-19 pandemic: a scoping review.
Impaired SARS-CoV-2 mRNA vaccine antibody response in chronic medical conditions: a real-world data analysis
Impact of COVID-19 on healthcare workers at a cancer care centre
Rapid And high throughput RT-qPCR assay for identification and differentiation between SARS-CoV-2 variants B.1.1.7 and B.1.351
Combination therapy of infliximab and thiopurines, but not monotherapy with infliximab or vedolizumab, is associated with attenuated IgA and neutralisation responses to SARS-CoV-2 in inflammatory bowel disease.
Effectiveness of early versus delayed rehabilitation following rotator cuff repair: systematic review and meta-analyses
Associations of behavioral problems and white matter properties of the cerebellar peduncles in boys and girls born full term and preterm
Machine learning identified distinct serum lipidomic signatures in hospitalized COVID-19-positive and COVID-19-negative patients
An effect of the COVID-19 pandemic: significantly more complicated appendicitis due to delayed presentation of patients!
Real-time PCR assays for detection and quantification of early P. falciparum gametocyte stages
Augmented mean arterial pressure supersedes STS-PROM risk score in predicting 1-year mortality in TAVR patients
Seroconversion panels demonstrate anti-SARS-CoV-2 antibody development after administration of the mRNA-1273 vaccine
Emerging SARS-CoV-2 variants of concern evade humoral immune responses from infection and vaccination
A Genetic Risk Score for Glioblastoma Multiforme Based on Copy Number Variations.
Survival and outcomes of tocilizumab use in severe and critically ill COVID-19 patients not responding to steroids
Choice of Intraoperative Ultrasound adjuncts for Brain Tumor Surgery
Using rapid (point-of-care) tests for COVID-19: A decision analysis comparing the expected benefit of two screening strategies
An outbreak inside an outbreak: rising incidence of carbapenem-resistant isolates during the COVID-19 pandemic. Report from a tertiary care center in Argentina.
Pregnancy outcomes from a restorative infertility treatment model: a single centre case series
Equally low blood metal ion levels at 10-years follow up of total hip arthroplasties with Oxinium, CoCrMo and stainless steel femoral heads. Data from a randomized clinical trial