Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Emergence of the novel SARS-CoV-2 lineage P.4.1 and massive spread of P.2 in South Brazil
Antibody response to first and second dose of BNT162b2 in a cohort of characterized healthcare workers
Allogeneic Hematopoietic Cell Transplants as Dynamical Systems: Effect of Early-Term Immune Suppression Intensity on Long-Term T Cell Recovery
Subgroups of young type 2 diabetes in India reveal insulin deficiency as a major driver
Clustering analysis based on PiCCO parameters in patients with septic shock
Serological prevalence of SARS-CoV-2 antibody among children and young age (between age 2-17 years) group in India: An interim result from a large multi-centric population-based seroepidemiological study
Childhood Asthma and COVID-19: A Nested Case-Control Study
Forecasting COVID-19 Spreading in Canada using Deep Learning
Information nudges for influenza vaccination: Evidence from a large-scale cluster-randomized controlled trial
One year of child neurology telemedicine: a data-driven analysis of 14,820 encounters
Neutralization breadth of SARS CoV-2 viral variants following primary series and booster SARS CoV-2 vaccines in patients with cancer
The mental health impact of COVID-19 racial and ethnic discrimination against Asian American and Pacific Islanders
Ontogeny of plasma lipid metabolism in pregnancy and early childhood: a longitudinal population study
JAX-CNV: A whole genome sequencing-based algorithm for copy number detection at clinical grade level
Comprehensive and Temporal Surveillance of SARS-CoV-2 in Urban Water Bodies: Early Signal of Second Wave Onset
Survey of SARS-CoV-2 genetic diversity in two major Brazilian cities using a fast and affordable Sanger sequencing strategy.
Autism in gifted youth is associated with low processing speed and high verbal ability
COVID-19 outcomes by cancer status, type, treatment, and vaccination
Promoting resilience in healthcare workers during the COVID-19 pandemic with a brief online intervention
Massive social protests amid the pandemic in selected  Colombian  cities:  Did  they increase COVID-19 cases?
Sepsis prediction via the clinical data integration system in the ICU
Changing characteristics over time of individuals receiving COVID-19 vaccines in Denmark: A population-based descriptive study of vaccine uptake
The risk factors of COVID-19 in a longitudinal population-based study
SARS-CoV-2 transmission, vaccination rate and the fate of resistant strains
Everyday functioning in a community-based volunteer population: Differences between participant- and study partner-report
Comparison of two highly-effective mRNA vaccines for COVID-19 during periods of Alpha and Delta variant prevalence