The numbers they give for dosing is to clear the GI, not for systemic infection.
Great link, Great find. I ate a ton of Salmon. When I took piperazine citrate, hundreds of small cones (heads or tails) came out. I thought this weird, and associated it more with tapeworm, that with flukes. The diameter of the cone was only 1/16 of an inch at the widest point, and there were 250, 350 at a clip. I have never heard of such things. I tested them, they were cellulose, turned clear and transparent in a day.