Distinguished Professor, University of California, San Diego

Assoc. prof., Faculty of Physics, University of Sofia

Scientific Researcher, Butantan Institute

Universität Bonn

Professor of Microbiology and Immunology, University of California Davis

Department of Medicine at Harbor-UCLA - Lundquist Institute

Professor i medicinsk mikrobiell patogenes

University of Pittsburgh Center for Vaccine Research

Distinguished Professor

Distinguished Professor Emeritus of Chemistry, Bio21 Institute, University of Melbourne