Josh is an epidemiologist and spatial demographer with research interests that include childhood undernutrition and infectious diseases and their socio-economic and environmental determinants in low-resource settings. He provides analytical expertise to numerous NASA-, NIH-, CDC-, WHO- and Gates Foundation-funded research projects, mostly carried out under the supervision of his longtime mentor Dr. Margaret Kosek. This research involves characterizing environmental drivers of enteric diseases, emerging febrile illnesses, and COVID-19 using earth observation (satellite), household survey, and surveillance data. This semester he took over instructing the undergraduate Introduction to Epidemiology course (PHS 3104) in the Department of Public Health Sciences.