Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Prevalence of Salivary IgA Reacting with SARS-CoV-2 among Japanese People Unexposed to the Virus
The effects of maternal pre-pregnancy BMI, pregnancy smoking and alcohol consumption on molar-incisor hypomineralisation: A negative control study
Sex-specific differences in resting-state functional brain activity in pediatric concussion.
Detecting cryptic clinically-relevant structural variation in exome sequencing data increases diagnostic yield for developmental disorders
Likely community transmission of COVID-19 infections between neighboring, persistent hotspots in Ontario, Canada
Aerosol emission rates from playing wind instruments -- Implications for COVID-19 transmission during music performance
Clinical profile and factors associated with COVID-19 in Cameroon: a prospective cohort study
Validation of AI-based software for objectification of conjunctival provocation test results in routine examinations and clinical studies
Associations of the BNT162b2 COVID-19 vaccine effectiveness with patient age and comorbidities
A protocol for a prospective observational cross sectional study as part of a service evaluation to identify whether living with frailty is a risk factor of digital exclusion from video consultations.
The Anorexia Nervosa Care Pathway: Closing the Treatment Gap to Improve Care for Patients Admitted to Medical Hospitals
Amerind ancestry predicts the impact of FADS genetic variation on omega-3 PUFA deficiency, cardiometabolic and inflammatory risk in Hispanic populations
Neutralization of ancestral SARS-CoV-2 and variants Alpha, Beta, Gamma, Delta, Zeta and Omicron by mRNA vaccination and infection-derived immunity through homologous and heterologous variants
Risk factors of chronic liver disease among adult patients in tertiary hospitals, Northern Ethiopia: An unmatched case-control study
A re-examination of the impact of COVD-19 deaths on the computation of average life expectancy
Model-driven mitigation measures for reopening schools during the COVID-19 pandemic
The valuation of outcomes for the temporary and chronic health states associated with Chlamydia trachomatis infection
Mathematical Modeling of Coronavirus Reproduction Rate with Policy and Behavioral Effects
Case fatality rates for COVID-19 are higher than case fatality rates for motor vehicle accidents for individuals over 40 years of age
Timeliness of reporting of SARS-CoV-2 seroprevalence results and their utility for infectious disease surveillance
Covid-19 and Mental Health of Individuals with Different Personalities
Effectiveness, Explainability and Reliability of Machine Meta-Learning Methods for Predicting Mortality in Patients with COVID-19: Results of the Brazilian COVID-19 Registry
The association between major trauma centre care and outcomes of adult patients injured by low falls in England and Wales.
Diagnostic accuracy of RT-PCR for detection of SARS-CoV-2 compared to a composite reference standard in hospitalized patients
SARS-CoV-2 seroprevalence, vaccination, and hesitancy in agricultural workers in Guatemala
How can instructions and feedback with external focus be shaped to enhance motor learning in children? A systematic review