- October-November 1996: two months’ FEMS Fellowship-funded working visit focused on the molecular typing of bacteria at the Service de Microbiologie (Head: Prof. Marc J. Struelens), Ηôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium.
- September 1998: ΕMBO/FEBS/UNESCO "Summer School on Molecular Mechanisms of Bacterial Pathogenesis", Spetsai, Greece.
- October 2000: "Workshop on Open and Distance Education", Greek Open University, Patras, Greece.
- 2000-02: "Adult Education Seminars" (co-ordinator: Alexis Kokkos).
- March 2004: “1st Teaching the Teachers Seminar”, Athens University Medical School.
- June 2004: “2nd Teaching the Teachers Seminar”, Athens University Medical School.
- November 2011: "Evidence-based Public Health" (1-day course), European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden.
