I found this last month when researching related things. It fits into a scary picture.

The side quote in that article sums it up well:

Scientists have come up with a clever way to control neurons via radio by cobbling together genes from humans, camels, and jellyfish. They use an engineered virus to install a door into each target neuron’s outer membrane, then jostle the door open using ferritin particles that respond to strong radio signals. Once the door opens, calcium ions pour into the cell and trigger the neuron to fire.

There is absolutely nothing stopping them from putting that into vaccines and activate them with the beam forming tech in 5G towers.