he Viral and Rickettsial Disease Laboratory Program (VRDL) is one of the oldest and largest state public health virology laboratories in the United States. As a CLIA-certified state public health laboratory performing high complexity testing, it serves as the reference laboratory for local public health laboratories and other clients, provides primary testing for some local public health departments that do not have laboratories, and conducts research to advance public health diagnostics and science. The VRDL is an advanced reference laboratory for the federal Laboratory Response Network and coordinates several state laboratory testing networks including the Respiratory Laboratory Network and the Measles Laboratory Network. VRDL provides laboratory testing, technical consultation and su