That's great you received the results in writing. Those flukes sound like a real pain in the butt to kill so I'm glad I've only got the fish Tapeworms to deal with.
I agree there doesn't seem to be any tropical medicine doctors. I've heard the best are in California and London. UCLA. Wow $400 for an appointment is high but if he is that good it would be worth it. Good luck with the praziquantel.