This Cukrzyca icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,300 icons, all in the same style and quality.
There is an image of a hand with all fingers closed except for the index finger which is extended outward in a pointing gesture. There is a drop of something(presumably blood) falling from the tip of the finger.