Perhaps no other insect is more common than the house fly. They can be found almost anywhere, especially in places were garbage, waste, or dirt abound. And they always seem to find a way to enter the homes and swarm on our foods. Small they might be, these pests can be very dangerous and may cause serious diseases.
How Flies Transmit Disease
The habits of flies make it very easy for them to spread diseases. Their sense of smell allows them to be attracted to food. They seem to be drawn to feces, sputum, and discharges from wounds and open sores. They may be considered the restless type in that they move back and forth from food and dirt, thereby increasing the risk of spreading diseases.
Disease may be spread by flies in a number of ways. Germs and other microorganisms from the garbage or from wounds are transmitted when they make contact with our bodies or with the food. These are transmitted mostly through their feet or hairy legs.
House flies do not digest food but only suck on the liquid and in doing so, vomit anything solid. These vomits, which contain disease-causing microorganisms, are then left in foods and parts of the body, exposing people to the risk of acquiring diseases.
Another way flies spread disease is through the waste they release when defecating. Their excrement has been found to contain different types of germs including intestinal parasites. This can be very dangerous to human beings since like their frequent vomiting, defecation is done also very often.
Common Diseases Spread by House Flies
House flies have been known to carry hundreds of different kinds of bacteria, many of which can cause very serious diseases. A very common type is the shigellosis which may cause dysentery and other disorders that are manifested by symptoms of diarrhea. The salmonellosis is another form of bacteria that is known to cause food poisoning, typhoid, paratyphoid, and enteritis. Flies are also responsible for transmitting bacteria that may cause conjunctivitis, although this disease is more common in tropical areas such as places in Asia, Africa, and Pacific regions.
Aside from bacteria that flies transmit they are also believed to contribute to the spread of a number of diseases caused by virus. They are also known carriers of parasitic worms, particularly the common tapeworms.
Importance of Preventing and Controlling the Spread of Flies
Although not all flies are carriers of diseases and some people may have a stronger immune system to resist any infestation, the danger of flies cannot be ignored. There are numerous ways in preventing the entry of flies in our homes. If the problem becomes serious that controlling it seems difficult, it may be best to get the assistance of the professionals who are experienced in the control of these pests.