Infectious Disease. A tough question to answer in short but i'll try. In the US leishmaniasis is not often seen. It is a caused by a protozoa transmitted by the female sandfly. In certain areas of the world it can be common. Insect control practices can greatly reduce the chances of a person being bitten (and getting the disease). There are many forms of the disease and it can be very difficult to treat.
Yes. According to estimates by the centers for disease control & prevention in atlanta there may be 700, 000 to 1, 200, 000 new cases of cutaneous leishmaniasis per year. Estimates for visceral leishmaniasis are from 200, 000 to 400, 000 new cases per year. Leishmaniasis is found in over 90 countries.