John Diaz-Decaro is the Director of Epidemiology for CMV Vaccines at Moderna, Inc. Dr. Diaz-Decaro received a bachelor of science degree in biology from Loyola Marymount University, a master of science degree in experimental and molecular pathology from the University of Southern California, and a doctor of philosophy degree in environmental health science from UCLA. Previously, Dr. Diaz-Decaro supported the development of worldwide epidemiological strategies and policies for a herpes zoster vaccine in the United States, China, and Japan. Dr. Diaz-Decaro is now involved in the phase 3 study (CMVictory) of mRNA-1647, a mRNA vaccine for the prevention of CMV infection, which is the leading cause of birth defects worldwide.