Instruct: Identify the main category of Medrxiv papers based on their titles.
Query: The impact of the initial and 2nd national COVID-19 lockdown on mental health in young people with and without pre-existing depressive symptoms
Racial and ethnic differences in COVID-19 vaccine hesitancy and uptake
The Oregon Child Absenteeism Due to Respiratory Disease Study (ORCHARDS):Rationale, Objectives, and Design
Seroconversion rate and socioeconomic and ethnic risk factors for SARS-CoV-2 infection in children in a population-based cohort
Characterizing cellular and molecular variabilities of peripheral immune cells in healthy inactivated SARS-CoV-2 vaccine recipients by single-cell RNA sequencing
Innate and adaptive immune defects associated with lower SARS-CoV-2 BNT162b2 mRNA vaccine response in elderly people
Increased interhemispheric asymmetry of cerebral blood flow in comatose adult patients on extracorporeal membrane oxygenation
Risk models based on non-cognitive measures may identify presymptomatic Alzheimer's disease
Computational systematics of nutritional support of vaccination against viral and bacterial pathogens as prolegomena to vaccinations against COVID-19
Predictors of real-world parents acceptance to vaccinate their children against the COVID-19
Metabolomics strategy for diagnosing urinary tract infections
Estimates of reduced vaccine effectiveness against hospitalization, infection, transmission and symptomatic disease of a new SARS-CoV-2 variant, Omicron (B.1.1.529), using neutralizing antibody titers
Improving the quality of anthropometric measures during medical consultations with children aged under five years old in Burkina Faso
Workload Indicators of Staffing Need (WISN) Method for Midwives Planning and Estimation at Asrade Zewude Memorial Primary Hospital, North west Ethiopia
Chest X-ray Severity and its Association with Outcomes in Patients with COVID-19 Presenting to the Emergency Department
A systematic review of enteric pathogens and antibiotic resistance genes in extramural urban aerosols
SARS-CoV-2 vaccination of convalescents boosts neutralization capacity against SARS-CoV-2 Delta and Omicron that can be predicted by anti-S antibody concentrations in serological assays
Material properties of urethral stents for hypospadias repair
An image processing protocol to extract variables predictive of human embryo fitness for assisted reproduction
EPHX1 mutations cause a lipoatrophic diabetes syndrome due to impaired epoxide hydrolysis and increased cellular senescence
Validation of breath biomarkers for obstructive sleep apnea
COVID symptoms, testing, shielding impact on patient reported outcomes and early vaccine responses in individuals with multiple myeloma
Immune response to COVID-19 vaccination is attenuated by poor disease control and antimyeloma therapy with vaccine driven divergent T cell response
Interactions among 17 respiratory pathogens: a cross-sectional study using clinical and community surveillance data
When thinking you are better leads to feeling worse: Self-other asymmetries in prosocial behavior and increased anxiety during the Covid-19 pandemic
Professional practice for COVID-19 risk reduction among health care workers : a Cross-Sectional Study with Matched Case-Control Comparison