Instruct: Identify the main category of Medrxiv papers based on their titles.
Query: Using self-controlled case series to understand the relationship between conflict and cholera in Nigeria and the Democratic Republic of Congo
Clinical presentation, disease course and outcome of COVID-19 in hospitalized patients with and without pre-existing cardiac disease: a cohort study across eighteen countries
Development of a sensitive trial-ready poly(GP) CSF biomarker assay for C9orf72-associated frontotemporal dementia and amyotrophic lateral sclerosis
Prior SARS-CoV2 infection in vaccinated solid organ transplant recipients induces potent neutralization responses against variants, including Omicron
The impact of shielding during the COVID-19 pandemic on mental health: Evidence from the English Longitudinal Study of Ageing
CD19 B cell repopulation after ocrelizumab, alemtuzumab and cladribine: Implications for SARS-CoV-2 vaccinations in multiple sclerosis
Self-collection and pooling of samples as resources-saving strategies for RT-PCR-based SARS-CoV-2 surveillance, the example of travelers in French Polynesia
Independent Replication and Drug-specificity of an Antidepressant Response Polygenic Risk Score
Pausing methotrexate improves immunogenicity of COVID-19 vaccination in patients with rheumatic diseases
Increasing Numbers of Non-communicable Disease Co-morbidities: Major Risk Factors for Hospitalization among a Cohort of People with HIV and COVID-19 Coinfection
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
Association between social media use and self-reported symptoms of depression in US adults
High concordance of 70-gene recurrence risk signature and 80-gene molecular subtyping signature between core needle biopsy and surgical resection specimen in early-stage breast cancer
T Cell Positive B Cell Negative Flow Cytometry Crossmatch (FCXM): Frequency, HLA-Locus Specificity, and Mechanisms Among 3073 Clinical FCXM Tests
MITIGATING THE 4th WAVE OF THE COVID-19 PANDEMIC IN ONTARIO
Impact of tiered restrictions on human activities and the epidemiology of the second wave of COVID-19 in Italy
Pegylated-interferon-{lambda} treatment-induced peripheral interferon stimulated genes are associated with SARS-CoV-2 viral load decline despite delayed T cell response in older individuals
Impact Of an Immune Modulator Mycobacterium-w On Adaptive Natural Killer Cells and Protection Against COVID-19
Disentangling post-vaccination symptoms from early COVID-19
Early Identification of SARS-CoV-2 Emergence in the DoD via Retrospective Analysis of 2019-2020 Upper Respiratory Illness Samples
A Hybrid Machine Learning Framework for Enhancing the Prediction Power in Large Scale Population Studies: The ATHLOS Project
Vaccines against Covid-19, venous thromboembolism, and thrombocytopenia. A population-based retrospective cohort study
COVID-19 and Indian population: a comparative genetic analysis
The contribution of genetic risk to the comorbidity of depression and anxiety: a multi-site electronic health records study
Retrospective mortality and prevalence of SARS-CoV-2 antibodies in greater Omdurman, Sudan: a population-based cross-sectional survey
The potential of digital health technologies in African context, Ethiopia