The European Society for Infectious Diseases in Obstetrics and Gynaecology (ESIDOG) was founded in Milano on May 4th, 1988. Since today it has become a very important Society in the field of Obstetrics and Gynaecology. It is a non-profit making educational and scientific cooperation. The Society is organized according to German Law. Its domicile is Munich. The Society will collaborate with existing public and private organizations to promote and encourage education and research in infections in OB/GYN and will participate and assist in the coordination of efforts or formulation of programs by all physicians, agencies and health personnel which will provide maximum efficiency and benefit to patients with infections in OB/GYN. The Society will also promote friendship and cooperation among scientists and medical practitioners in all countries. The membership of the Society includes both clinicians and scientists. To future ESIDOG-meetings the Society will invite a selected group of leading experts to discuss the most recent and sometimes controversial topics in the exciting fields of medicine. The Society also supports clinical studies in this special medical field. Its principles were created in 2013 in London at the 9th European meeting (ESIDOG) at a memorial board meeting with 20 country representatives of ESIDOG. The main reason to explain the existence and necessity of ISIDOG are threefold: the need for an active, transparent and dynamic society for clinicians and scientists interested in infectious diseases in Obstetrics and Gynaecology in Europe and abroad, the persistent tendency to privatize ESIDOG became irresolvable, necessitating to modulate the Society into a new version that allowed to keep an open bookkeeping, regularly updated membership, list elections for board members and continuation of Friendship. In order not to offend the original ESIDOG board members who want to hold on to the old system, we respect the acronym ESIDOG to exist alongside, the feeling the a European Society should keep the doors open for other communities, and accept members from region’s such as Eastern European and Over all USA but also Asian, African, Oceania and America. The Society is composed of paying and non-paying members, and is managed by a Board of 5 elected members, and a Scientific Board of to 5 members. Only paying members have a right to elect their board representatives. Furthermore there is a Board of 20 to 25 country managers, based upon the active participation and representation of each European (international) country.