I've read about the Casimir effect, and there seem to be no particle mediating the force; but the virtual particles called virtual photons. Is it enough to conclude that the Casimir effect is due to the electroweak fundamental force?

I've read about the Casimir effect, and there seem to be no particle mediating the force; but the virtual particles called virtual photons. Is it enough to conclude that the Casimir effect is due to the electroweak fundamental force?

Edit regarding the tag as duplicate question. In the link given, one reads

(...) Casimir forces can be computed without reference to zero point energies. They are relativistic, quantum forces between charges and currents.

My question still remains the same: Is it enough to conclude that the Casimir effect is due to the electroweak fundamental force? If yes, then there is no particle mediating this force?