Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Estimating the early impact of immunization against COVID-19 on deaths among elderly people in Brazil: analyses of secondary data on vaccine coverage and mortality.
Longitudinal changes in age and race of patients with SARS-CoV-2 in a multi-hospital health system
Socioeconomic Disparities in the Effects of Pollution on Spread of Covid-19: Evidence from US Counties
Anterior Segment Parameters on Optical Coherence Tomography in Healthy Children
Pathogenic Neurofibromatosis type 1 (NF1) RNA-splicing resolved by targeted RNAseq
Predicting COVID-19 outbreak using open mobility data for minimal disruption on the country's economy
Use of U.S. Blood Donors for National Serosurveillance of SARS-CoV-2 Antibodies: Basis for an Expanded National Donor Serosurveillance Program.
Variation at Spike position 142 in SARS-CoV-2 Delta genomes is a technical artifact caused by dropout of a sequencing amplicon
Assessment of N95 respirator for reuse after sterilization: filtration efficacy, breathing resistance, quality factor, chemical structure and surface charge density
A rare missense variant in the ATP2C2 gene is associated with language impairment and related measures
Evaluation of the specificity and accuracy of SARS-CoV-2 rapid antigen self-tests compared to RT-PCR from 1015 asymptomatic volunteers
A small number of early introductions seeded widespread transmission of SARS-CoV-2 in Quebec, Canada
Profile of Brazilian inpatients with COVID-19 vaccine breakthrough infection and risk factors for unfavorable outcome
Islet autoantibody level distributions in type 1 diabetes and their association with genetic and clinical characteristics
Trans Cohorts Metabolomic Modulation Following Long-Term Successful Therapy in HIV-Infection
Tau spreading is driven by neuronal connectivity in primary tauopathies - evidence from tau-PET and histopathology
Evolution of synchronous bilateral breast cancers provide insights into interactions between host, tumor and immunity.
Frequencies of TP53 Germline Variations and Identification of Two Novel 3'UTR Variants in a Series of Head and Neck Cancer Cases
COVID-19 Patients Analysis using Superheat Map and Bayesian Network to identify Comorbidities Correlations under Different Scenarios.
Urine as a non-invasive alternative to blood for germline and somatic mutation detection in hepatocellular carcinoma
The cost of building an environmental surveillance system for typhoid
Up-regulated tumor intrinsic growth potential and decreased immune function orchestrate the evolution of lung adenocarcinoma
Is trait mindfulness associated with lower pain reactivity and connectivity of the default mode network? A replication and extension study in healthy and episodic migraine participants
Public Service Quality under Permanent and Fixed-term Employment Contracts: Evidence from Physician Supply of Primary Care
Gut-bladder axis syndrome associated with recurrent UTIs in humans
Definition of normal vertebral morphology using NHANES-II radiographs