You need to be taking Doxycycline (an antibiotic) for the die-off which is why you have the fever. Sharkman said he took Doxycycline for 6 months. I only took it for 6 weeks.
It may also kill the strongyloide larvae by an indirect action. Some other meds claim to kill strongyloides, but I can't say for certain they work.
The CDC (Center for Disease Control) says that 400 mg twice a day of albendazole is an alternative drug. Maybe you can buy this in your country. It is available in the U.S. in a liquid form for cattle/sheep. See ICU's posts for more info.