Instruct: Identify the main category of the given medRxiv paper based on the title.
Query: COVID-19 transmission in educational institutions August to December 2020 in Germany: a study of index cases and close contact cohorts
Rapid spread of the SARS-CoV-2 δ variant in the area of Paris (France) in June 2021
Deceased donor kidney degradomics indicates cytoskeletal proteolytic alterations impacting post-transplant function.
Explainable Brain Disease Classification and Relevance-Guided Deep Learning
Oxygen saturation instability in suspected covid-19 patients; contrasting effects of reduced VA/Q and shunt.
Quality of Care for Children Under Five with Malaria Using IMCI Approach at Public Health Centre: Literature Review
Evaluation on the Effectiveness on the Implementation of WHO-CST Programme in Hong Kong: A RCT Protocol
Lens Thickness and Its Association with General and Ocular Parameters in Healthy Subjects
Red flags useful to screen for gastrointestinal and hepatic diseases in patients with shoulder pain: a scoping review protocol
Expansion, persistence and efficacy of donor memory-like NK cells for the treatment of post-transplant relapse
Temporal changes in mental response and prevention patterns, and their impact from uncertainty stress during the transition in China from the COVID-19 epidemic to sporadic infection
A Comparison of Four Commercially Available RNA Extraction Kits for Wastewater Surveillance of SARS-CoV-2 in a College Population
REACT-1 round 9 final report: Continued but slowing decline of prevalence of SARS-CoV-2 during national lockdown in England in February 2021
The SARS-CoV2 pandemic explained via asymptomatic infection and susceptibility heterogeneity. Buenos Aires First Wave
The Influence of Contextual Factors on Maternal Healthcare Utilization in sub-Saharan Africa: A Scoping Review of Multilevel Models
Comparison of Antibody Response Durability of mRNA-1273, BNT162b2, and Ad26.COV2.S SARS-CoV-2 Vaccines in Healthcare Workers
Safety and immunogenicity of a recombinant DNA COVID-19 vaccine containing the coding regions of the spike and nucleocapsid proteins: Preliminary results from an open-label, phase 1 trial in healthy adults aged 19-55 years
Sex Modifies the Effect of Genetic Risk Scores for Polycystic Ovary Syndrome on Metabolic Phenotypes
A quantitative evaluation of aerosol generation during manual facemask ventilation
Cross-neutralizing activity against SARS-CoV-2 variants in COVID-19 patients: Comparison of four waves of the pandemic in Japan
Aging-related cell type-specific pathophysiologic immune responses that exacerbate disease severity in aged COVID-19 patients
Real-time RT-PCR for Venezuelan equine encephalitis complex, Madariaga and Eastern equine encephalitis viruses: application in clinical diagnostic and mosquito surveillance
Impact of B.1.351 (beta) SARS-CoV-2 variant on BNT162b2 mRNA vaccine effectiveness in long-term care facilities of eastern France: a retrospective cohort study
A Third Dose of SARS-CoV-2 Vaccine Increases Neutralizing Antibodies Against Variants of Concern in Solid Organ Transplant Recipients
Development and Implementation of a scalable and versatile test for COVID-19 diagnostics in rural communities
Feeding Activated Bifidobacterium infantis EVC001 to Very Low Birth Weight Infants is Associated with Significant Reduction in Rates of Necrotizing Enterocolitis