Dean for the National School of Tropical Medicine
Baylor College of Medicine
Houston, United States
Departments of Pediatrics and Molecular Virology & Microbiology
Baylor College of Medicine
Houston, Texas, United States
Endowed Chair in Tropical Pediatrics
Texas Children's Hospital
Houston, Texas, United States
Texas Children's Hospital Center for Vaccine Development
Houston, Texas, United States
Founding Editor in Chief
PLOS Neglected Tropical Diseases
University Professor
Baylor University
Houston, Texas, United States
Fellow in Disease and Poverty
James A. Baker III Institute for Public Policy
Rice University
Houston, Texas, United States
Health Policy Scholar
Center for Medical Ethics and Health Policy
Baylor College of Medicine


M.D. from Weill Cornell Medical College
Ph.D. from The Rockefeller University
B.A. (magna cum laude) from Yale University

Professional Interests

  • Drug and Vaccine Delivery
  • Tropical Medicine


Human Hookworm Vaccine
Development of a vaccine for the more than 400 million people suffering from hookworm infection in the world today. Vaccine currently in phase 1 clinical trials in Brazil and Gabon.
Schistosomiasis Vaccine
Schistosomiasis afflicts over 200 million people around the globe and is the deadliest disease among the seven most prevalent NTDs, killing an estimated 280,000 people annually. Our vaccine is entering phase 1 clinical trials.
Chagas Disease and Leishmaniasis Vaccine
A project for the selection and discovery of antigens appropriate to advance into the development process of new vaccines to combat Chagas disease (American trypanosomiasis) and leishmaniasis.
SARS Vaccine
A new vaccine to prevent severe acute respiratory syndrome (SARS). A prototype RBD219 N1 vaccine is entering scale-up process development
Multivalent Anthelmintic Vaccine Discovery
A panhelmintic vaccine to prevent ascariasis (roundworm) and trichuris (whipworm), soil-transmitted helminths afflicting hundreds of millions of people around the world.