Just finished watching Stargate Atlantis episode where a virus got loose that caused everyone to basically get dementia & worse within 6 hours.

That would be a seriously debilitating Bio weapon.

Everyone eventually lost their memory about who & where they are.

The non-effected ones early on had the ill ones rounded up to keep them together & out of harms way. But eventually, they rioted because they didn't know why they were locked up & didn't know who anyone was/

Real world application would be a fun watch & have serious loses