<Dd> caused by protozoan parasites of the genus Leishmania, and transmitted by the bite of certain species of sand fly . </Dd> <Li> Leprosy <Dl> <Dd> (or Hansen's disease) is a chronic infectious disease caused by Mycobacterium leprae . Leprosy is primarily a granulomatous disease of the peripheral nerves and mucosa of the upper respiratory tract; skin lesions are the primary external symptom . Left untreated, leprosy can be progressive, causing permanent damage to the skin, nerves, limbs, and eyes . Contrary to popular conception, leprosy does not cause body parts to simply fall off, and it differs from tzaraath, the malady described in the Hebrew scriptures and previously translated into English as leprosy . </Dd> </Dl> </Li> <Dl> <Dd> (or Hansen's disease) is a chronic infectious disease caused by Mycobacterium leprae . Leprosy is primarily a granulomatous disease of the peripheral nerves and mucosa of the upper respiratory tract; skin lesions are the primary external symptom . Left untreated, leprosy can be progressive, causing permanent damage to the skin, nerves, limbs, and eyes . Contrary to popular conception, leprosy does not cause body parts to simply fall off, and it differs from tzaraath, the malady described in the Hebrew scriptures and previously translated into English as leprosy . </Dd> </Dl> <Dd> (or Hansen's disease) is a chronic infectious disease caused by Mycobacterium leprae . Leprosy is primarily a granulomatous disease of the peripheral nerves and mucosa of the upper respiratory tract; skin lesions are the primary external symptom . Left untreated, leprosy can be progressive, causing permanent damage to the skin, nerves, limbs, and eyes . Contrary to popular conception, leprosy does not cause body parts to simply fall off, and it differs from tzaraath, the malady described in the Hebrew scriptures and previously translated into English as leprosy . </Dd>

Mosquito-transmitted roundworms cause a tropical disease called ____