In June 2018, two societies chose to establish a cooperation with MDPI journals.

As part of this collaboration, the members of these affiliated societies will enjoy a discount on the article processing charges (APC) when submitting articles to the corresponding journals. The collaboration goes beyond the discount benefit offered to members and includes other services as well as cross-promotions.

Further information about these societies:

The Australasian Virology Society (AVS) aims to promote, encourage, support and advocate for the discipline of virology in the Australasian region. The society was incorporated in 2011 after 10 years operating as the Australian Virology Group (AVG), founded in 2001. AVG began as a regular biennial meeting whose aim was to provide a national forum and opportunity for those with interests in human, animal, plant, or prokaryotic virology to meet and discuss wide-ranging issues from basic molecular virology to ecology, disease, diagnosis, and control. This meeting is now a regular feature of the Australasian virology calendar.

The International Society for the Systems Sciences (ISSS) is among the first and oldest organizations devoted to interdisciplinary inquiry into the nature of complex systems, and remains perhaps the most broadly inclusive. The Society was initially conceived in 1954 at the Stanford Center for Advanced Study in the Behavioral Sciences by Ludwig von Bertalanffy, Kenneth Boulding, Ralph Gerard, and Anatol Rapoport. In collaboration with James Grier Miller, it was formally established as an affiliate of the American Association for the Advancement of Science in 1956. Originally founded as the Society for General Systems Research, the society adopted its current name in 1988 to reflect its broadening scope.