Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: The impact of population-wide rapid antigen testing on SARS-CoV-2 prevalence in Slovakia
Determinants of the incidence and mortality rates of COVID-19 during the first six months of the pandemic; A cross-country study
Epidemiological profile of patients with stage 5 chronic kidney disease on dialysis with Covid 19 infection in a Public Hospital-Peru
Tenofovir Disoproxil Fumarate and severity of COVID-19 in people with HIV infection
The association between loneliness during the COVID-19 pandemic and psychological distress
Covid-19 Vaccination in Pregnancy: A Systematic Review
Risk of SARS-CoV-2 exposure among hospital healthcare workers in relation to patient contact and type of care
Reconstructing the COVID-19 epidemic in Delhi, India: infection attack rate and reporting of deaths
Shedding of Infectious SARS-CoV-2 Despite Vaccination when the Delta Variant is Prevalent - Wisconsin, July 2021
Cardiorespiratory Fitness and Neuromuscular Performance in Patients Recovered from COVID-19
Using FIB-4 score as a screening tool in the assessment of significant liver fibrosis (F2) in patients with transfusion dependent beta thalassaemia: a cross sectional study
T1/T2 Ratio Imaging Improves Cortical Lesion Contrast in Multiple Sclerosis on 3T MRI
Risk of Myopericarditis following COVID-19 mRNA vaccination in a Large Integrated Health System: A Comparison of Completeness and Timeliness of Two Methods
A longitudinal analysis of pneumococcal vaccine serotypes in pneumonia patients in Germany
Safety, Immunogenicity, and Efficacy of a COVID-19 Vaccine (NVX-CoV2373) Co-administered With Seasonal Influenza Vaccines
Systematic review and patient-level meta-analysis of SARS-CoV-2 viral dynamics to model response to antiviral therapies
Combination of Spironolactone and Sitagliptin Improves Clinical Outcomes of Outpatients with COVID-19: An Observational Study
IT ambidexterity driven patient agility and hospital patient service performance: a variance approach
Surveillance and correlation of SARS-CoV-2 viral RNA, antigen, virus isolation, and self-reported symptoms in a longitudinal study with daily sampling
A cross-sectional survey of the workplace factors contributing to symptoms of anxiety and depression among nurses and physicians during the first wave of COVID-19 pandemic in two US healthcare systems
Mixed invasive molds among COVID-19 patients
Detection of two CAL.20C SARS-CoV-2 variants in Monterrey metropolitan area in Northeast Mexico
The EEG multiverse of schizophrenia
SARS-CoV-2 seropositivity after infection and antibody response to mRNA-based vaccination
Quantitative measurement of infectious virus in SARS-CoV-2 Alpha, Delta and Epsilon variants reveals higher infectivity (viral titer:RNA ratio) in clinical samples containing the Delta and Epsilon variants.
Bean extract-based gargle for efficient diagnosing COVID-19 at early-stage using rapid antigen tests: a clinical, prospective, diagnostic study