Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: COVID-19 vaccine effectiveness against laboratory confirmed symptomatic SARS-CoV-2 infection, COVID-19 related hospitalizations and deaths, among individuals aged 65 years or more in Portugal: a cohort study based on data-linkage of national registries February-September 2021
Outbreak of P.3 (Theta) SARS-CoV-2 emerging variant of concern among service workers in Louisiana
The risk of severe COVID-19 and mortality from COVID-19 in people living with HIV compared to individuals without HIV - a systematic review and meta-analysis of 1 268 676 individuals.
Smoking modulates different secretory subpopulations expressing SARS-CoV-2 entry genes in the nasal and bronchial airways
The LeVe CPAP System for oxygen-efficient CPAP respiratory support: Development and pilot evaluation
GRADING prognostic factors for severe and recurrent Clostridioides difficile infection: expected and unexpected findings. A systematic review.
Association of women empowerment with anaemia and haemoglobin concentration in children in sub-Saharan Africa: a multilevel analysis
Digital health and quality of home-based primary care for older adults: A scoping review protocol
DAGM: a novel modelling framework to assess the risk of HER2-negative breast cancer based on germline rare coding mutations
The genetic risk for COVID-19 severity is associated with defective innate immune responses
Primary care and point-of-care testing during a pandemic: Clinician's perspectives on integrating rapid testing for COVID-19 into the primary care pathway
Prediction of COVID-19 mortality among hospitalized patients in Sudan
Safety Profile of Sinopharm COVID-19 Vaccine and Breakthrough Infections in Pakistan
ERAP1, ERAP2, and two copies of HLA-Aw19 alleles increase the risk for Birdshot Chorioretinopathy in HLA-A29 carriers
Art therapy as treatment modality for persons living with dementia- a protocol for a scoping review of systematic reviews
Multi-site Evaluation of SARS-CoV-2 Spike Mutation Detection Using a Multiplex Real-time RT-PCR Assay
C Reactive Protein based early intervention for home quarantined COVID-19 patients to avoid complications and hospitalization.
Disentangling the roles of demographic and temporal changes in the incidence and prevalence of musculoskeletal disorders: a systematic review.
Metagenomic analysis of antimicrobial resistance genes in wastewaters in Benin and Burkina Faso indicates a serious health risk from untreated hospital wastewaters in low-income countries
Is attachment style in early childhood associated with mental health difficulties in late adolescence?
The Effects of Pericapsular nerve group (PENG) block on Postoperative Recovery in Elderly Patients with Hip fracture: a study protocol for randomized, parallel controlled, double-blind trial
Does the use of intraoperative CT scan improve outcomes in Orthopaedic surgery? A protocol for systematic review and meta-analysis.
NATURAL HISTORY OF LAFORA DISEASE A Prognostic Systematic Review and Individual Participant Data Meta-Analysis.
Early Identification of SARS-CoV-2 Emergence in the DoD via Retrospective Analysis of 2019-2020 Upper Respiratory Illness Samples
Interim estimates of increased transmissibility, growth rate, and reproduction number of the Covid-19 B.1.617.2 variant of concern in the United Kingdom
Cortical and subcortical grey matter micro-structure is associated with polygenic risk for schizophrenia