La Paz, Bolivia: a study site

Leon Research Projects

Clean Greens

We aim to prevent outbreaks and illness from fresh produce by improving its microbial safety worldwide

Neglected Tropical Diseases

We aim to reduce morbidity and death from NTDs among Latin Americans and immigrants by improving access to care and training health providers


We aim to reduce outbreaks, illness, and death from norovirus, the most common cause of gastroenteritis worldwide, through applied immunology and epidemiology research


We aim to reduce the morbidity and mortality from rotavirus diarrhea worldwide by increasing the benefits of the rotavirus vaccine