Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Feeding practices and cost of diet of six-month-old HIV exposed uninfected compared to HIV unexposed uninfected infants in a peri-urban community in South Africa
Diet quality and risk and severity of COVID-19: a prospective cohort study
Temporal trends, socio-economic inequalities in obesity and responses by federal government, Nepal: a systematic review of observational studies, policies, strategies and plans, 2005-2019
Worldwide Prevalence and Clinical Characteristics of RAS Mutations in Head and Neck Cancer: A Systematic Review and Meta-Analysis
Efficacy of SARS-CoV-2 vaccine in thoracic cancer patients: a prospective study supporting a third dose in patients with minimal serologic response after two vaccine doses
Waning of BNT162b2 vaccine protection against SARS-CoV-2 infection in Qatar
The prevalence of adaptive immunity to COVID-19 and reinfection after recovery, a comprehensive systematic review and meta-analysis
Study protocol: Assessing the association between corporate political influence and implementation of policies to tackle commercial determinants of non-communicable diseases: a cross-sectional analysis of 172 countries
New Zealand Emergency Department COVID-19 Preparedness Survey
The implementation of a virtual ward using digital solutions informing community clinicians in early supported discharge of patients with SARS-Cov2 respiratory symptoms from an acute hospital setting
The impact of the COVID-19 pandemic on health service utilisation following self-harm: a systematic review
Sexual risk among pregnant women at risk of HIV infection in Cape Town, South Africa: What does alcohol have to do with it?
Investigation of Autosomal Genetic Sex Differences in Parkinsons disease
A Logistic Formula in Biology and Its Application to Deaths by the Third Wave of COVID-19 in Japan
Molecular epidemiology of AY.28 and AY.104 delta sub-lineages in Sri Lanka
Assessment of breakthrough infections among post-vaccinated healthcare workers in a Tertiary Dental Hospital in New Delhi, India
Safety and immunogenicity of a recombinant DNA COVID-19 vaccine containing the coding regions of the spike and nucleocapsid proteins: Preliminary results from an open-label, phase 1 trial in healthy adults aged 19-55 years
Accuracy of rapid point-of-care antigen-based diagnostics for SARS-CoV-2: an updated systematic review and meta-analysis with meta regression analyzing influencing factors
Predictive Modeling of COVID-19 Case Growth Highlights Evolving Demographic Risk Factors in Tennessee and Georgia
Localising Vaccination Services: Qualitative Insights on an Orthodox Jewish Collaboration with Public health during the UK coronavirus Vaccine Programme
Investigation of Dengue Fever Outbreak in a Rural Area of Islamabad, Pakistan: A Case Control Study
Understanding national trends in COVID-19 vaccine hesitancy in Canada - April 2020 to March 2021
Rapid, high throughput, automated detection of SARS-CoV-2 neutralizing antibodies against native-like vaccine and delta variant spike trimers
Interferon pathway lupus risk alleles modulate risk of death from acute COVID-19
A linked mixture model of coronary atherosclerosis
The Effect of Image Resolution on Automated Classification of Chest X-rays