Virginia could abandon vaccine scheduling software amid persistent problems Nurses wait in numbered stations to administer the Moderna COVID-19 vaccine at Richmond Raceway in Richmond, Va., February 2, 2021. (Source: Parker Michels-Boyce/ For the Virginia Mercury) By Kate Masters | March 10, 2021 at 9:10 AM EST - Updated March 11 at 10:37 AM Virginia health officials might abandon PrepMod, a nearly $750,000 software system for scheduling, tracking and reporting COVID-19 vaccinations. Dr. Danny Avula, the stateâs vaccine coordinator, said PrepModâs developers have been unable to fix recurring problems with the system, which have left it unworkable for many local health departments. State leaders have openly acknowledged those challenges since mid-February, when Avula announced they had given the company a deadline of Feb. 24 to address the issues.