So if your worried about parasites, get tested, don't just randomly poison yourself. Even here in vietnam they don't randomly injest poison because of a suspicion.

There is currently a parasite all over the US causing explosive diarrhea.

Sorry to break it to you, but we gutted the shit that protects us from shit like this. So get used to it.

So you're a lay person with no expertise or insight into the signs they look for to determine if checking for parasites are necessary?

I've had a bunch of physicals too and I don't think that qualifies me, in any way, to comment on medical standard practices.