Bloomberg Philanthropies is committed to supporting states in helping them build and execute contact tracing programs to control the spread of COVID-19. New York Governor Andrew Cuomo and former Mayor Mike Bloomberg have teamed up to launch the contact tracing pilot program to help prevent the spread of COVID-19. Contact tracing, which has been used for diseases like HIV, Ebola and Tuberculosis, is a public health strategy that allows health officials to identify people who may have been exposed to the coronavirus and don't know it.