The blue <a href="//commons.wikimedia.org/wiki/Circle" class="mw-redirect" title="Circle">circle</a> is the global symbol for <a href="https://en.wikipedia.org/wiki/diabetes" class="extiw" title="en:diabetes">diabetes</a>, introduced by the <a rel="nofollow" class="external text" href="http://www.idf.org">International Diabetes Federation</a> with the aim of giving diabetes a common identity, supporting existing efforts to raise awareness of diabetes and placing the diabetes epidemic firmly in the public spotlight.
<a href="//commons.wikimedia.org/w/index.php?title=User:IntDiabetesFed&amp;action=edit&amp;redlink=1" class="new" title="User:IntDiabetesFed (page does not exist)">IntDiabetesFed</a>
The blue circle symbol is the logo of <a href="//commons.wikimedia.org/wiki/Category:World_Diabetes_Day" title="Category:World Diabetes Day">World Diabetes Day</a> and has been used to represent diabetes since 2006: <a rel="nofollow" class="external autonumber" href="https://www.worlddiabetesday.org/resources/logo.html">[1]</a>
International Diabetes Federation (IDF). IDF holds all rights to the use of the blue circle for diabetes, see <a rel="nofollow" class="external text" href="https://www.idf.org/images/Blue-circle-usage-guidelines.pdf">usage guidelines</a>.