Its kind of ironic that its so easy to identify blasto which has yet to be definitively linked to pathology yet all the other more dangerous ones are almost impossible. By the way, there is a theory regarding blasto and why it is so difficult to irradicate. I myself have it and have taken all the regimens with no results. The theory is that blasto is harbored by a larger parasite such as a nematode that essentially protects it. Therefore the infection can continue indefinitely even with treatment. There are knowns relationships between the macro and micro parasites. Flukes are associated with salmonella, as well, there have been studies on using Antibiotics against the bacteria contained in specific parasites in order to irradicate them.