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The common housefly has been found to harbour up to 100 illnesses yet none of them affect them. Scientists, at Cornell University USA, are now looking into how they are able to survive with the pathogens, they even accommodate a disease that should leave them blind but are instead immune.

They’re a pretty big pest and you can see why with them landing on such things as; carcasses, faeces, junk, and other bacteria/virus infected “nasties”. With they’re evasive skills which will leave you searching for them for ages; they are a real pain and therefore have many chances to spread the pathogens.

Prof David Conway from the London School of Hygiene and Tropical Medicine said:

Many other flies transmit important human diseases and hopefully this work will encourage further genome analyses of these disease vectors, and comparisons between them”

The common housefly has been able to evolve to their dirty lifestyles and therefore don’t suffer from any sickness, just be careful if they’re landing on you for more than a few seconds, they’re most likely evacuating they’re bowels…lovely. Pyrethrum, a spray used to get rid of insects, may be the answer to all your fly problems; you’re welcome!

The problem with the flies, except for the very obvious unhygienic lifestyle, is they multiply in numbers very quickly so it is extremely difficult to control their population as much as people would want to. Within 8-9 days, a single female can lay hundreds of eggs at a time and then there’ll multiply again and again.

They are also a big factor into the spread of pathogens in the lesser developed countries which cause serious health problems and are a close relative to the tsetse fly that feeds on blood and causes sleeping sickness in Africa. If we looked closely in the genomes of other species, it could hold the key to many other diseases.