Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: SARS-CoV-2 UK, South African and Brazilian Variants in Karachi- Pakistan
A recombinant BCG-based vaccine against the human respiratory syncytial virus induces a balanced cellular immune response against viral and mycobacterial antigens
Serum but not mucosal antibody responses are predicted by pre-existing SARS-CoV-2 spike cross-reactive CD4+ T cells following BNT162b2 vaccination in the elderly
Synthesizing evidence from the earliest studies to support decision-making: to what extent could the evidence be reliable?
Modeling the impact of racial and ethnic disparities on COVID-19 epidemic dynamics
Why one size fits all is not enough when designing covid-19 immunity certificates for domestic use: a UK wide cross-sectional online survey
Next-generation Serology by Mass Spectrometry: Readout of the SARS-CoV-2 Antibody Repertoire
Clinical and Non-clinical Proof of Concept Supporting the Development of RJX As an Adjunct to Standard of Care Against Severe COVID-19
The influence of biological, epidemiological, and treatment factors on the establishment and spread of drug-resistant Plasmodium falciparum
A Simplified Point-of-Care Lung Ultrasound Protocol to Detect Coronavirus Disease 2019 in Inpatients: A Prospective Observational Study
Diagnostic errors are common in acute pediatric respiratory disease: a prospective, single-blinded multicentre diagnostic accuracy study in Australian Emergency Departments
Machine learning approach to dynamic risk modeling of mortality in COVID-19: a UK Biobank cohort study
Plans to vaccinate children for COVID-19: a survey of US parents
Epidemiological Philosophy of Pandemics
Immunogenicity and safety of an inactivated SARS-CoV-2 vaccine in people living with HIV-1
Octreotide may improve pharyngocutaneous fistula healing through downregulation of cystatins: a pilot study
COMORBIDITY ANALYSIS: OVERLAPPING SEMICIRCLES WITH WIGNER LAW AND RANDOM MATRIX THEORY
Job stress among workers who telecommute during the coronavirus disease (COVID-19) pandemic in Japan: a cross-sectional study
Impact of non-pharmaceutical interventions on SARS-CoV-2 outbreaks in English care homes: a modelling study
Inferring effects of mutations on SARS-CoV-2 transmission from genomic surveillance data
Key factors for effective implementation of healthcare workers support interventions in health organisations after patient safety incidents: a protocol for a scoping review
Implications of delayed reopening in controlling the COVID-19 surge in Southern and West-Central USA
Accuracy of computer-aided chest X-ray screening in the Kenya National Tuberculosis Prevalence Survey
MUC16 mutation is associated with tumor grade, clinical features, and prognosis in glioma patients
Sex disparities in COVID-19 mortality vary considerably across time: The case of New York State
Magnetic activated cell-sorting identifies a unique lung microbiome community associated with disease states