Hate to sound negative, but...

One of the main problems we are having with respect to parasites in general, is the industrialization of farming.

Mass production of food, including animals, has the effect of placing an enormous amount of biological activity in confined areas.
This is unnatural, and the waste is becoming more infectious and toxic.

Add to this, the amount of effort by producers to ward off bacteria, fungi and parasites through genetic and chemical means, and you create a biological nightmare.

The approach for treating these increasingly potent bugs, will have to be examined from other angles besides the standard means.

I think peptide technology can go a long way, but certain biologically engineered probiotics may also offer some hope; like a bacillus that makes abundant chitinase, or other enzyme that can't hurt us, but targets primary components of most parasitic animals. Shroom