Dr. Jeffers started his career in gene therapy in the late 90s pseudotyping lentiviral and retroviral vectors with various viral glycoproteins, notably Ebola GP and Marburg GP. He is a molecular virologist and has investigated viruses such as SARS-Coronavirus and Rift Valley Fever Virus. Dr. Jeffers received his doctoral degree in virology from Purdue University, and earned his BS in biology from Colorado State University. He has post-doctoral experience from the University of Colorado and the Institute Pasteur in Paris, France.