Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: The toll of COVID-19 on African children: A descriptive analysis on the COVID-19-related morbidity and mortality among the pediatric population in Sub-Saharan Africa
Monitoring carbon dioxide to quantify the risk of indoor airborne transmission of COVID-19
Effects of Acute Normovolemic Hemodilution on Post-Cardiopulmonary Bypass Coagulation Tests and Allogeneic Blood Transfusion in Thoracic Aortic Repair Surgery: An Observational Cohort Study
HIV-1 co-infection increases relapse rate and shortens survival in patients with visceral leishmaniasis
De-novo FAIRification via an Electronic Data Capture system by automated transformation of filled electronic Case Report Forms into machine-readable data
Correlations between kidney and heart function bioindicators and the expressions of Toll-Like, ACE2, and NRP-1 receptors in COVID-19
mRNA-based COVID-19 vaccine boosters induce neutralizing immunity against SARS-CoV-2 Omicron variant
Negative Excess Mortality in Pneumonia Death caused by COVID-19 in Japan
Model-based estimation of transmissibility and reinfection of SARS-CoV-2 P.1 variant
Suboptimal response to COVID-19 mRNA vaccines in hematologic malignancies patients
Early Anakinra Treatment for COVID-19 Guided by Urokinase Plasminogen Receptor
An in-depth analysis of phosphorylated tau in amyotrophic lateral sclerosispost-mortem motor cortex and cerebrospinal fluid
Should individuals be paid to participate in mass drug administration to control malaria?
Immunosuppression impaired the immunogenicity of inactivated SARS-CoV-2 vaccine in non-dialysis kidney disease patients
Detection of the omicron variant in international travellers and their family contacts in India
Chronic kidney disease is associated with attenuated plasma metabolome response to oral glucose tolerance testing
Identification of novel biomarkers for pyridoxine-dependent epilepsy using untargeted metabolomics and infrared ion spectroscopy - biochemical insights and clinical implications
Depression and anxiety during 2019 coronavirus disease pandemic in Saudi Arabia: a cross-sectional study
Neonatal and Maternal Outcome of COVID-19 positive women in Sri Lanka: Secondary Analysis using National COVID-19 Positive Pregnant Women Surveillance
Impact of long-COVID on health-related quality of life in Japanese COVID-19 patients
Trait Mindful Nonreactivity and Nonjudgment Prospectively Predict of COVID-19 Health Protective Behaviors Across a Two-Month Interval in a USA Sample
Individual Reference Intervals for Personalized Interpretation of Clinical and Metabolomics Measurements
Effect of in-hospital treatment with angiotensin-converting enzyme inhibitors and angiotensin II receptor blockers on mortality and complications in patients hospitalized for COVID-19: a large Spanish cohort study.
The effect of antidepressants on severity of COVID-19 in hospitalized patients: A systematic review and meta-analysis
Placental transcription profiling in 6-23 weeks' gestation reveals differential transcript usage in early development
Sex Differences in the Incidence and Risk of Ankle-Foot Complex Stress Fractures Among U.S. Military Personnel