Final answer:
Leishmaniasis is a disease caused by the protozoan parasite, Leishmania, which is transmitted to humans via the bite of infected sand flies. Mild symptoms include fever, fatigue and skin sores, while severe cases can lead to significant organ damage and anemia.
Step-by-step explanation:
The disease caused by a protozoan that is passed from sandflies to humans is known as Leishmaniasis. This illness is triggered by the protozoan parasite called Leishmania. Transmission occurs when sand flies that are infected bite humans. Symptoms of this disease are usually mild. However, severe cases may lead to organ damage, anemia and a loss of immune competence. Leishmaniasis is classified as a Neglected Tropical Disease (NTD) and is relatively widespread in tropical and subtropical regions.
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