A circle with many sticks coming out of it, which might be a sun or a virus shape.

Sun Or Virus Shape

A virus icon with a circle and semi-circle shape.

Virus And Shapes

A virus shape represented by a circle with spikes inside a square shape with curved edges.

A virus iconA virus icon represented by a circle with spikes inside a rounded rectangle.

A virus illustration with four molecules. 

A virus shape represented by a circle with dots inside and spikes.

A virus shape represented by a circle with spikes.