Lymphatic filariasis (LF) is, after malaria, the second most common mosquito-borne disease globally. LF is caused by three species of nematode parasites, which can be spread by a wide range of mosquito species.The World Health Organization (WHO) estimates the global burden of infection to be 120 million, with 1 billion people at risk of infection.1 LF is, after mental illness, the second most important cause of long-term disability worldwide. LF, which has recently been extensively reviewed, also occurs in travelers, military expeditionary forces,and other expatriates. LF should therefore always be considered in the differential diagnosis of travelers returning from endemic areas, and experiencing acute episodes of fever, pain and swelling of the limbs or external genitalia,or lymphatic system affectation. There have been several recent case reports of LF occurring in travelers.