Due to constraints in vaccine supply, this agent-based model of COVID-19 transmission was developed to compare the impact of two vaccination strategies: 1) vaccinate more individuals with the first dose of available vaccines and delay the second dose or 2) to continue with the recommended 2-dose series as tested in clinical trials. Model population was stratified into 6 age groups of 0 to 4, 5 to 19, 20 to 49, 50 to 64, 65 to 79, and 80+ years based on United States census data.