Instruct: Identify the main category of a Medrxiv paper based on its title.
Query: Retinol Depletion in Severe COVID-19
COVID-19 convalescents exhibit deficient humoral and T cell responses to variant of concern Spike antigens at 12 month post-infection
Heterologous prime-boost immunization with CoronaVac and Convidecia
The Impact of Sampling Type, Frequency and Scale of Collection System on SARS-CoV-2 Quantification Fidelity
Can a greenhouse gas emissions tax on food also be healthy and equitable? A systematized review and modelling study from Aotearoa New Zealand
USING PHYLOGENETICS TO ACCURATELY INFER HIV-1 TRANSMISSION DIRECTION
Deaths in Children and Young People in England following SARS-CoV-2 infection during the first pandemic year: a national study using linked mandatory child death reporting data
Evaluation of determinants of the serological response to the split-inactivated influenza vaccine
Early-life exposure to the Chinese famine of 1959-61 and type 2 diabetes in adulthood: a systematic review and meta-analysis
Comparison of tests done and Tuberculosis cases detected by Xpert MTB/RIF and Xpert MTB/RIF-Ultra in Uganda
Integrated metagenomic and bile acid metabolomic analysis of human fecal microbiota transplantation for recurrent Clostridioides difficile and/or inflammatory bowel diseases.
Post-COVID assessment in a specialist clinical service: a 12-month, single-centre analysis of symptoms and healthcare needs in 1325 individuals.
Prevalence of Salivary IgA Reacting with SARS-CoV-2 among Japanese People Unexposed to the Virus
A preliminary study of commercially available general-purpose chest radiography artificial intelligence-based software for detecting airspace opacity lesions in COVID-19 patients
Public health impacts of an imminent Red Sea oil spill
Data-driven analysis shows robust links between fatigue and depression in early multiple sclerosis
COVID-19 patient accounts of illness severity, treatments and lasting symptoms
Development and validation of a productive liquid chromatography-tandem mass spectrometry method for the analysis of androgens, estrogens, glucocorticoids and progestagens in human serum
Did the COVID-19 pandemic result in more family physicians stopping practice? Results from Ontario, Canada
Cardiac Surgery during the Covid-19 Pandemic: Evidence from the first wave
Prevalence and Factors Associated with Behavioural Problems in 5-year-old Children Born with Cleft Lip and/or Palate from the Cleft Collective
Statistical Forecasting : Third Wave of COVID-19-With an Application to India
Effects of the introduction of interprofessional conferences on the intensive care unit: Comparison of the length of stay in the intensive care unit before and after the introduction of interprofessional conferences
The Current Understanding of Precision Medicine and Personalised Medicine in Selected Research Disciplines: Study Protocol of a Systematic Concept Analysis
Molecular phenotypes associated with antipsychotic drugs in the human caudate nucleus
Predicting the onset of freezing of gait in de novo Parkinson's disease