Transmission of Disease: Flies are potential factors of many diseases: typhoid and paratyphoid fevers, diarrheas and dysenteries, cholera, conjunctivitis etc. and in fact most diseases that can be spread by mechanical contamination; Flies transmit disease in the following ways:
http://www.preservearticles.com/201105176758/what-are-the-diseases-caused-by-house-fly.html
Mature house flies also use saliva to liquefy solid food before feeding on it. During this process, they transfer the pathogens first collected by landing on offal. Diseases carried by house flies include typhoid, cholera and dysentery. Other diseases carried by house flies include salmonella, anthrax and tuberculosis. House flies have also been known to transmit the eggs of parasitic worms.
https://www.orkin.com/flies/house-fly/house-fly-and-disease/
House flies are recognized as carriers of easily communicable diseases. Flies collect pathogens on their legs and mouths when females lay eggs on decomposing organic matter such as feces, garbage and animal corpses. House flies carry diseases on their legs and the small hairs that cover their bodies.
https://www.orkin.com/flies/house-fly/house-fly-and-disease/
There are several different forms of leishmaniasis in people. Some people have a silent infection, without any symptoms or signs. The most common form is cutaneous leishmaniasis, which causes skin sores. The sores typically develop within a few weeks or months of the sand fly bite. The sores can change in size and appearance over time.
https://www.cdc.gov/parasites/leishmaniasis/disease.html
Sandfly (or sand fly) is a colloquial name for any species or genus of flying, biting, blood-sucking dipteran (fly) encountered in sandy areas.
https://en.wikipedia.org/wiki/Sandfly
In certain cases sticky fly papers are used to control the house flies. These papers can be easily made by mixing 2 lbs of resin and one pint of castor oil which should be heated together until the mixture- resembles molasses. This should, while hot, be. Smeared on paper by using an ordinary paint brush.
http://www.preservearticles.com/201105176758/what-are-the-diseases-caused-by-house-fly.html
What is leishmaniasis? Leishmaniasis is a parasitic disease that is found in parts of the tropics, subtropics, and southern Europe. Leishmaniasis is caused by infection with Leishmania parasites, which are spread by the bite of infected sand flies. There are several different forms of leishmaniasis in people.
https://www.cdc.gov/parasites/leishmaniasis/gen_info/faqs.html
While usually transmitted by ticks, haemobartonellosis can also be carried by fleas. The disease targets red blood cells and can range from mild to very severe symptoms. If very severe, haemobartonellosis can cause cats to suffer anemia that results in weight loss and a fast heart rate.
https://www.petcarerx.com/article/what-diseases-do-fleas-cause/163
Guard your dog against the many diseases that fleas carry and transmit. You may think that these tiny pests only make your pet do a little scratching and itching, but fleas actually cause a number of diseases, some of which can be fatal. By not protecting your pets from fleas, you are exposing them and yourself to severe health risks.
https://www.petcarerx.com/article/what-diseases-do-fleas-cause/163
For the disease in canids, see canine leishmaniasis. Leishmaniasis, also spelled leishmaniosis, is a disease caused by parasites of the Leishmania type. It is spread by the bite of certain types of sandflies. The disease can present in three main ways: cutaneous, mucocutaneous, or visceral leishmaniasis.
https://en.wikipedia.org/wiki/Leishmaniasis
what disease can you get from sand fly
You can get  leishmaniasis diseases from sand fly. A disease that you can get from sand fly is leishmaniasis.