We have multiple plausible sources: 1) Mass hysteria, if you tell enough people about weird unspecific symptoms, a lot of people might experience it. 2) Chemi

We have multiple plausible sources: 1) Mass hysteria, if you tell enough people about weird unspecific symptoms, a lot of people might experience it. 2) Chemical agents. Food poisoning, the paint used by government contractors, etc. 3) Biological agents. Maybe side-effects of covid or some other virus/bacterium. 4) Some kind of stress-induced disorder, e.g. PTSD. 5) Some kind of technology with radiation, whether microwave weapon or just an overpowered stingray over a long enough time. To rule these out you'd have to start testing these hypotheses. They say in the article that people could move in and out of the beam, which might speak for #5, but doesn't rule out #1. We could distribute "tin foil hats", or more accurately wire-mesh suits, that block a wide array of microwave radiation, to officials. If they experience the onset of these symptoms they can put these on and see if it brings relief. This still wouldn't rule out #1 due to the placebo effect, but at least it would rule out the other nefarious causes. Now if that does still point in this direction you could start giving targeted people antennae to detect the radiation to rule out #1.