3d Animation of Sars-cov-2 viruses flowing on a blood stream with blood cells, the animation is made with Blender 3d software using the particles systemso you still have full control over the parameters such as:

• increase or decrease the number of particles for both viruses and blood cells, and you can switch to different types of particles if you wish
• I used effector objects to set the motion of the particles, so you can easly increase or decrease their intensity to speed up or slow down the flow of the particles.
• the blood cell still has the base mesh + mirror modifier + subdivision surface modifier, so you can easly adjust its shape
• the vein also still has all its modifiers, and is based on displacement texture modifier, so you can easly tweak its shape too
• the render is to work both with Eevee and Cycles, although with Eevee you'll near realtime render times,