Instruct: Identify the main category of medRxiv papers based on the titles.
Query: Effectiveness of COVID-19 vaccines against the B.1.617.2 variant
SARS-CoV-2 reinfection trends in South Africa: analysis of routine surveillance data
Prognostic association supports indexing size measures in echocardiography by body surface area
Prediction of vaccine efficacy of the Delta variant
Force of infection: A determinant of vaccine efficacy?
Relative expression of pro-inflammatory molecules in COVID-19 patients manifested disease severities.
Automated method to extract and purify RNA from wastewater enables more sensitive detection of SARS-CoV-2 markers in community sewersheds
Time trends in social contacts before and during the COVID-19 pandemic: the CONNECT study
Application of nasal spray containing dimethyl sulfoxide (DMSO) and ethanol during the COVID-19 pandemic may protect healthcare workers: A randomized controlled trials
Comparison of COVID-19 vaccine prioritization strategies in the United States
SARS-CoV-2 detection in multi-sample pools in a real pandemic scenario: a screening strategy of choice for active surveillance
Adherence to and enforcement of non-pharmaceutical interventions (NPIs) for COVID-19 prevention in Nigeria, Rwanda, and Zambia: A mixed-methods analysis
A Retrospective analysis of DIC score and SIC score in prediction of COVID-19 severity
Community level misconception about COVID-19 and its associated factors: Evidence from a cross-sectional study in Bangladesh
A systematic review of the factors associated with suicide attempts among sexual-minority adolescents
Health Economic Burden of COVID-19 in Saudi Arabia
Cost-effectiveness analysis of BNT162b2 COVID-19 booster vaccination in the United States
Linking Free Text Documentation of Functioning and Disability to the ICF with Natural Language Processing
Who should be first in line for the COVID-19 vaccine? Surveys in 13 countries of the publics preferences for prioritisation
The BNT162b2 mRNA vaccine against SARS-CoV-2 reprograms both adaptive and innate immune responses
COMPARISON OF PERFORMANCE CHARACTERISTICS BETWEEN LATERAL FLOW, ELISA AND ELECTROCHEMILUMINESCENCE IMMUNOASSAYS FOR THE DETECTION OF SARS-COV-2 ANTIBODIES AMONG HEALTHCARE WORKERS
Controlling long-term SARS-CoV-2 infections is important for slowing viral evolution
Development of low-cost serological immunoassay to detect antiviral antibodies to Sars-Cov-2 Spike protein
Assessing the impact of adherence to Non-pharmaceutical interventions and indirect transmission on the dynamics of COVID-19: a mathematical modelling study
Recent COVID-19 vaccination is associated with modest increases in the physiological demands to graded exercise
Indoor Air Quality Intervention in Schools; Effectiveness of a Portable HEPA Filter Deployment in Five Schools Impacted by Roadway and Aircraft Pollution Sources