Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Changes in cardiorespiratory fitness and body mass index due to COVID-19 mitigation measures in Austrian children aged 7 to 10 years.
Covid-19 Associated Hepatitis in children (CAH-C) during the second wave of SARS-CoV-2 infections in Central India: Is it a complication or transient phenomenon.
A privacy-preserving Bayesian network model for personalised COVID19 risk assessment and contact tracing
Evolutionary trajectories and transmission dynamics of multidrug-resistant Mycobacterium tuberculosis in Tibet, China
Determinants of SARS-CoV-2 anti-spike antibody levels following BNT162b2 vaccination: cross-sectional analysis of 6,000 SIREN study participants
Monoclonal antibody and antiviral therapy for treatment of mild-to-moderate COVID-19 in pediatric patients
Ultrasensitive assay for saliva-based SARS-CoV-2 antigen detection.
Emerging and Continuing Trends in Opioid Overdose Decedent Characteristics during COVID-19
Plasma P-selectin is an early marker of thromboembolism in COVID-19
Sex-specific metabolic pathways associate with Alzheimer's Disease (AD) endophenotypes in the European Medical Information Framework for AD Multimodal Biomarker Discovery (EMIF-AD MBD) cohort
Accuracy of antigen and nucleic acid amplification testing on saliva and naopharyngeal samples for detection of SARS-CoV-2 in ambulatory care
Establishing consensus on emergency department interventions that could be conducted in sub-acute care settings for non-emergent paramedic transported visits: A RAND/UCLA modified Delphi study
Biologic correlates of beneficial convalescent plasma therapy in a COVID-19 patient reveal disease resolution mechanisms
Regional replacement of SARS-CoV-2 variant BA.1 with BA.2 as observed through wastewater surveillance
The effect of including the Nordic Hamstring exercise on sprint and jump performance in athletes: protocol of a systematic review and meta-analyses
"Learn from the lessons and don't forget them": Identifying transferable lessons for COVID-19 from meningitis A, yellow fever, and Ebola virus disease vaccination campaigns
Household transmission of SARS-CoV-2 in Norway; a prospective, longitudinal study showing increased transmissibility of the Alpha variant (B.1.1.7) compared with other variants
Optimizing vaccine allocation for COVID-19 vaccines: critical role of single-dose vaccination.
The impact of demographic factors on the accumulated number of COVID-19 cases per capita in Europe and the regions of Ukraine in the summer of 2021
Informed decision making on the uptake of evidence-based smoking cessation assistance: A needs assessment among end users and experts to inform decision aid development
Genome-wide Association Study identifies two novel loci for Gilles de la Tourette Syndrome
Childhood temperamental, emotional, and behavioral predictors of clinical mood and anxiety disorders in adolescence
Aversive memory formation in humans is determined by an amygdala-hippocampus phase code
Effectiveness of 13-valent pneumococcal conjugate vaccine against medically-attended lower respiratory tract infection and pneumonia among older adults
Ruxolitinib versus Dexamethasone in Hospitalized Adults with Covid-19: multicenter matched-controlled study
Covid-19, non-Covid-19 and excess mortality rates not comparable across countries