Instruct: Identify the main category of the given medRxiv paper based on the title.
Query: Food insecurity and the risk of HIV acquisition: Findings from population-based surveys in six sub-Saharan African countries (2016-2017)
HIV-1 evolutionary dynamics under non-suppressive antiretroviral therapy
Prior SARS-CoV2 infection in vaccinated solid organ transplant recipients induces potent neutralization responses against variants, including Omicron
Randomized, Comparative, Clinical Trial to Evaluate Efficacy and Safety of PNB001 in Moderate COVID-19 Patients
Implications of delayed reopening in controlling the COVID-19 surge in Southern and West-Central USA
Increased prevalence and clinical impact of hypocalcaemia in severe COVID-19 distinguishes it from other forms of infective pneumonia
Convergent epitope-specific T cell responses after SARS-CoV-2 infection and vaccination
Clinical correlation of lung ultrasound profiles in patients with COVID-19 infection
Continued Emergence and Evolution of Omicron in South Africa: New BA.4 and BA.5 lineages
BNT162b2 mRNA Covid-19 vaccine does not impair sperm parameters
Migration and Outbreaks of Vaccine-Preventable Disease in Europe: A Systematic Review
Pre-morbid use of proton pump inhibitors has no effect on the risk of death or hospitalization in COVID-19 patients: a matched cohort study
Remote parent-implemented intervention for young children on the autism spectrum during the COVID-19 home confinement period in Geneva, Switzerland: the experience of parents and therapists.
In hospital cardiac arrest in Intensive Care Unit versus non Intensive Care Unit patients with COVID 19. A systematic review and meta analysis
Potential contribution of climate conditions on COVID-19 pandemic transmission over West and North African countries
Autoantigen characterization in the lower esophageal sphincter muscle of patients with achalasia.
Surveillance of COVID-19 vaccine effectiveness - a real-time case-control study in southern Sweden
Sampling Statistical Errors in Big Data Research: 3 Cases of Breast Cancer Research
Change in COVID-19 risk over time following vaccination with CoronaVac: A test-negative case-control study
Performance of intensive care unit severity scoring systems across different ethnicities.
Variation in COVID-19 excess mortality by age, sex, and province within Italy
Updating The Accuracy of Administrative Claims for Identifying Left Ventricular Ejection Fraction Among Patients with Heart Failure
SARS-CoV-2 neutralization after mRNA vaccination and variant breakthrough infection
Evaluation of cold pain tolerance in patients with fibromyalgia and opioid use by survival analysis
Effect of vaccination and of prior infection on infectiousness of vaccine breakthrough infections and reinfections
Genetic Connection to Drug-Induced Liver Injury (DILI) Through Statistical Learning Methods