How is leishmaniasis spread? Leishmaniasis is spread by the bite of some types of phlebotomine sand flies. Sand flies become infected by biting an infected animal (for example, a rodent or dog) or person. Since sand flies do not make noise when they fly, people may not realize they are present.

Why do sandflies bite me so much?

Why do sandflies bite? Bites from sandflies (also known as blackflies) are a familiar nuisance during the warmer months. As with mosquitoes, it's only the females that bite and they use the extra nutrients from blood to produce more eggs. ... Sandflies don't just feed on humans but will attack other mammals and birds too.

How long do sandfly bites last?

Some people may not be aware that they have been bitten as the itching may not commence for several hours after the bites. The bites are usually painful and itchy. They may also form blisters, become weepy and persist for days or weeks. Scratching the bites can result in a secondary bacterial infection.