Government of the United States of America - Vaccine Research Center, Government of the United States of America - Vaccine Research Center, University of Pittsburgh - Center for Vaccine Research, University of Pittsburgh - Center for Vaccine Research, University of Pittsburgh - Center for Vaccine Research, Government of the United States of America - Vaccine Research Center, University of Pittsburgh - Department of Infectious Diseases and Microbiology, University of Pittsburgh - Division of Cardiothoracic Imaging, University of Pittsburgh - Department of Biostatistics, Government of the United States of America - Vaccine Research Center, University of Pittsburgh - Department of Infectious Diseases and Microbiology, University of Pittsburgh - Center for Vaccine Research, University of Georgia - Department of Population Health, University of Pittsburgh - Department of Infectious Diseases and Microbiology, The Ohio State University, University of Pittsburgh - Center for Vaccine Research, University of Pittsburgh - Center for Vaccine Research, University of Georgia - Department of Population Health, University of Pittsburgh - Division of Cardiothoracic Imaging, University of Pittsburgh - Center for Vaccine Research, University of Pittsburgh - Department of Infectious Diseases and Microbiology, Independent and University of Pittsburgh - Center for Vaccine Research