National Institutes of HealthUnited States Department of Health & Human ServicesNational Institutes of Health (NIH) - USA [R01AI64537]; Merck-UT; NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASESUnited States Department of Health & Human ServicesNational Institutes of Health (NIH) - USANIH National Institute of Allergy & Infectious Diseases (NIAID) [R01AI064537, R01AI064537, R01AI064537, R01AI064537, R01AI064537, R01AI064537, R01AI064537, R01AI064537, R01AI064537, R01AI064537] Funding Source: NIH RePORTER