Can Flies Cause Disease?
WouterDespite their reputation as pests, flies can cause disease. In fact, both houseflies and blowflies carry bacteria that can cause disease in humans. Houseflies carry 351 different types of bacteria, including some that are linked to human illnesses and infections. These insects can spread these bacteria to humans through their wings, legs, and saliva. This means that every time a fly touches your food, it is transferring live bacteria.
The most common symptoms of a fly infection are diarrhea, fever, and blood in the stool. These symptoms can last for four to two weeks and can be uncomfortable. Flies can also spread Anthrax, which can cause red, swollen, or ulcerated lesions on your skin. To prevent infection, cover food and water that has been in contact with the infected area.
Houseflies transmit more than 65 different pathogens, including anthrax, cholera, and infantile diarrhea. They can also transmit foodborne pathogens like Shigella and E. coli. More studies are needed to determine the survival rates of these microorganisms.
In a study like this one, fly samples were collected from human houses, poultry farms, and cattle byres and placed in sterile test tubes. These were then transported to a laboratory that specializes in parasitology. The specimen bottles included the date, type of site, and fly traps used. The flies were then placed in clean, sterile test tubes and washed with 5 ml of normal saline. In addition, the fly samples were shaken vigorously to get rid of any parasites.
