Symposia since 1993

2009
          The need of hygiene in everyday life - challenges and perspectives
2007
The Future of Hygiene and Public Health in Europe - Needs, Challenges, Strategies and Concepts 
2005
Sonntag H.-G.; Harke, H.-P.: Contribution of Hygiene to Prevent Infectious Diseases. Hyg Med 2006; 31: 332-339 (Article in german)
2003
Sonntag H.-G.; Harke, H.-P.: Prevention of infections in practice and home healthcare. Hyg Med 2004; 29:253-258 (Article in german)
2001
 Harke, H.-P.; Exner, M.: Infectious and hygienic aspects of "Out of Area“- sorties of the German armed forces or humanity aid organisations. Hyg Med 2002; 27: 409-415 (Article in german)
1999
Sonntag H.-G.; Harke, H.-P.: Quality Management in Medicine with special regard to Hygiene. Hyg Med 2000; 25: 392-399 (Article in german)
1997
Preventative Strategies in Hospital Hygiene (Article in german)
1996
Infectious relevance and development of multi-resistant germs and measures for the reduction of their dispersal (Article in german)
1995
Infection diseases as a health risk for the german public (Article in geman)
1993
Use of antiseptica for prophylaxis and therapy of infections in surgical interventions (Article in german)