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A study performed to review reported cases of Loa loa in non-endemic countries in the past 25 years. There were 102 reviewed cases of imported loiasis, 61 of them from Europe and 31 from the USA. Three quarters of the infestations were acquired in three countries that consider this an endemic: Cameroon, Nigeria, and Gabon. In the subjects viewed, , peripheral blood microfilariae were detected 61.4% of the time, eye worm migration 53.5% of the time, and Calabar swellings 41.6% of the time. A trend showed in the symptoms of the patients where Calabar swellings and eosinophilia were more common among travelers. African immigrants tended to have microfilaremia. Eye worm migration was observed in a similar proportion between the two groups. Only 35 of the patients underwent clinical follow-up. The men and women that conducted this study concluded that Loa loa would end up migrating to Europe and the United States, due to increased travel to already endemic regions.