Complex sentence: From 2008 to 2011, he served as an Instructor at the University of Texas Medical Branch, Galveston, Texas, where he developed vaccines for Ehrlichia, an intracellular bacterial pathogen in humans and animals.
Split into simpler sentences: From 2008 to 2011, he served as an Instructor at the University of Texas Medical Branch, Galveston, Texas. While there he developed vaccines for "Ehrlichia", an intracellular bacterial pathogen in humans and animals.