Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: The increase in the risk of severity and fatality rate of covid-19 in southern Brazil after the emergence of the Variant of Concern (VOC) SARS-CoV-2 P.1 was greater among young adults without pre-existing risk conditions
Antibody responses to AZD1222 vaccination in West Africa
Epidemiological topology data analysis links severe COVID-19 to RAAS andhyperlipidemia associated metabolic syndrome conditions
A population-level analysis of the protective effects of androgen deprivation therapy against COVID-19 disease incidence and severity
Determinants of motivated behavior are linked to fatigue and its perturbation by SARS-CoV-2 vaccination
Comparative effectiveness of allocation strategies of COVID-19 vaccines and antivirals against emerging SARS-CoV-2 variants of concern in East Asia and Pacific region
Responsive caregiving, opportunities for early learning, and children's safety and security during COVID-19: A rapid review
Engagement with COVID-19 Public Health Measures in the United States: A Cross-Sectional Social Media Analysis from June to November 2020
The feasibility of an objective measure of the parent-child relationship in health visiting practice: assessment of the Maternal Postnatal Attachment Scale.
Severe outcomes in unvaccinated COVID-19 cases <18 years during different variant waves in Norway
Effects of visual attention modulation on dynamic effective connectivity and visual fixation during own-face viewing in body dysmorphic disorder
Phase Recognition in Contrast-Enhanced CT Scans based on Deep Learning and Random Sampling
High seroconversion rate and SARS-CoV-2 Delta neutralization in PLWHIV vaccinated with BNT162b2
High COVID-19 vaccine coverage allows for a re-opening of European universities
QUALITY ASSESSMENT AND COMPARATIVE ANALYSIS ON THE RECOMMENDATIONS OF CURRENT GUIDELINES ON SCREENING AND DIAGNOSIS OF PERIPHERAL ARTERIAL DISEASE; A SYSTEMATIC REVIEW.
Decoding molecular programs in melanoma brain metastases
Idiopathic subglottic stenosis arises at the interface of host and pathogen.
Evaluating the policy of closing bars and restaurants in Cataluya and its effects on mobility and COVID19 incidence
MR Elastography-based tissue stiffness in glioblastomas is associated with reduced cerebral blood flow
Within-country age-based prioritisation, global allocation, and public health impact of a vaccine against SARS-CoV-2: a mathematical modelling analysis
Monitoring occurrence of SARS-CoV-2 in school populations: a wastewater-based approach
Whole genome sequencing identifies multiple loci for critical illness caused by COVID-19
LARisk: An R package for lifetime attributable risk from radiation exposure
Clinical and economic benefits of lenzilumab plus standard of care compared with standard of care alone for the treatment of hospitalized patients with Coronavirus Disease 19 (COVID-19) from the perspective of National Health Service England
Clinical presentation and in-hospital outcomes of older patients hospitalized with COVID-19 in Montreal, Canada: a retrospective review
Microsampling for monitoring gentamicin in neonates.