Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Timeline of SARS-CoV2 spread in Italy: results from an independent serological retesting
The Vaccination Threshold for SARS-CoV-2 Depends on the Indoor Setting and Room Ventilation
Protection Across Age Groups of BNT162b2 Vaccine Booster against Covid-19
Evaluation of Measles Surveillance System amidst Covid 19 pandemic in Asutifi North District, Ahafo Region, Ghana.
Serum Oxidative Stress Markers in Women with Uterine Fibroids in Lagos, Nigeria.
The safety and efficacy of mesenchymal stem cells in the treatment of COVID-19-associated pneumonia: a systematic review and meta-analysis
"Now, I know my life is not over!": Introduction and Adaptation of the RESPECT HIV Intervention, OraQuick, and Trauma-Informed Care for Female Victims of Non-Partner Sexual Violence in Haiti
A prospective double-blinded non-selection trial of reproductive outcomes and chromosomal normalcy of newborns derived from putative low/moderate-degree mosaic IVF embryos
Quantifying contribution of Lipoprotein (a) to atherogenic lipoprotein burden: a novel particle-based approach
COVID-19 vaccination status is associated with physical activity in German-speaking countries: the COR-PHYS-Q cohort study
Patients with presumed tuberculosis in sub-Saharan Africa that are not diagnosed with tuberculosis: a systematic review and meta-analysis
Advancing convergent mixed methods design using the Diamond Approach for clinical multiple case studies: an example using data on time to treatment in aneurysmal subarachnoid haemorrhage
Safety and efficacy of Pulmonary physiotherapy in hospitalized patients with severe COVID-19 pneumonia (PPTCOVID): A prospective, randomised, single-blind, controlled trial
A Spatiotemporal Analysis of Socio-Environmental Patterns in Severe Maternal Morbidity: A Retrospective Birth Cohort
Perceptions of and obstacles to SARS-CoV-2 vaccination among adults in Lebanon: a cross-sectional online survey
Longitudinal changes in physical activity during and after the first national lockdown due to the COVID-19 pandemic in England
Genome and epigenome wide studies of plasma protein biomarkers for Alzheimer's disease implicate TBCA and TREM2 in disease risk
Human lung tissue resident memory T cells are re-programmed but not eradicated with systemic glucocorticoids after acute cellular rejection
Effective connectivity during faces processing in major depression: Distinguishing markers of pathology, risk, and resilience
Variability in physical inactivity responses of university students during COVID-19 pandemic: A monitoring of daily step counts using a smartphone application
Multiple sclerosis cortical lesion detection with deep learning at ultra-high-field MRI
Right Anterior Temporal Degeneration, Emotions, and Loss of Nonverbal Semantics: The Emotional Semantic Variant Frontotemporal Dementia
A gender-bias-mitigated, data-driven precision medicine system to assist in the selection of biological treatments of grade 3 and 4 knee osteoarthritis: development and preliminary validation of precisionKNEE
Effect of different disease-modifying therapies on humoral response to BNT162b2 vaccine in Sardinian multiple sclerosis patients
Muscle Strength and Muscle Mass as Predictors of Hospital Length of Stay in Patients with Moderate to Severe COVID-19: A Prospective Observational Study
TARGET-HF: Developing a model for detecting incident heart failure among symptomatic patients in general practice using routine health care data