Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: Waning Effectiveness of the Third Dose of the BNT162b2 mRNA COVID-19 Vaccine
Factors Affecting Guardians' Decision Making on Clinic-based Purchase of Children's Spectacles in Nigeria
Effects of polygenic risk for suicide attempt and risky behavior on brain structure in young people with familial risk of bipolar disorder
Identification of ultra-rare genetic variants in Pediatric Acute Onset Neuropsychiatric Syndrome (PANS) by exome and whole genome sequencing
Disordered eating and self-harm as risk factors for poorer mental health during the COVID-19 pandemic: A population-based cohort study
Psychometric properties of the Sleep Hygiene Index in a large Italian community sample.
Mobile phone communication for improving uptake of antiretroviral therapy in HIV-infected pregnant women: updated systematic review and meta-analysis
REACT-1 round 10 report: Level prevalence of SARS-CoV-2 swab-positivity in England during third national lockdown in March 2021
A Web-based Spatial Decision Support System of Wastewater Surveillance for COVID-19 Monitoring: A Case Study of a University Campus
Ultrasensitive detection of Bacillus anthracis by real time PCR targeting a polymorphism in multi-copy 16S rRNA genes and their transcripts
Multi-strain fermented milk promotes gut microbiota recovery after Helicobacter pylori therapy: a randomised, controlled trial
Longitudinal analyses of depression and anxiety highlight greater prevalence during COVID-19 lockdowns in the Dutch general population and a continuing increase in suicidal ideation in young adults
The Ugandan Severe Acute Respiratory Syndrome -Coronavirus 2 (SARS-CoV-2) Model: A Data Driven Approach to Estimate Risk
A machine learning-based holistic approach for diagnoses within the Alzheimer's disease spectrum
A Novel Convolutional Neural Network for COVID-19 detection and classification using Chest X-Ray images
Efficacy and safety of tocilizumab in the management of COVID-19: A systematic review and meta-analysis of observational studies
Development and validation of the MMCD score to predict kidney replacement therapy in COVID-19 patients
Gout, rheumatoid arthritis and the risk of death from COVID-19: an analysis of the UK Biobank
Reliability and Predictive Validity of a Gait Assessment using Inertial Measurement Units: The Importance of Standardizing Walking Surface and Footwear
Gut Bacterial Microbiome Profiles Associated with Colorectal Cancer Risk: A Systematic Review and Meta-Analysis
Sustained SARS-CoV-2 seroprevalence and related hematological features in asymptomatic blood donors
Long-term survival analysis of HIV patients on antiretroviral therapy in Congo: a 14 years retrospective cohort analysis, 2003-2017
Evaluation of height as a disease risk factor through a phenome-wide association study of genetically-predicted height
OCD symptom severity and comorbid psychiatric diagnoses in a Swedish genetic epidemiological obsessive-compulsive disorder cohort
ABO and Rh blood groups, demographics, and comorbidities in COVID-19 related deaths: a retrospective study in Split-Dalmatia County, Croatia
Increased serum thromboxane A2 and prostacyclin but lower complement C3 and C4 levels in COVID-19: associations with chest CT-scan anomalies and lowered peripheral oxygen saturation.