8 The 3 Most Common Pests and the Diseases They Carry

The 3 Most Common Pests and the Diseases They Carry



Why do we avail pest control services? It is a known fact that pests, especially pest infestation, can ruin our houses just like termites, or destroy crops like locusts or rats. But it is also a known fact that these pests can cause sickness which, in severe cases, can lead to death.

But let’s not go to extreme cases like the bubonic plague, also known as the Black Death. Still, we can acquire diseases from pests that we commonly see. Here are three of most common pests and the diseases we can acquire from them.

House flies

House flies, amongst all kinds of flies, are carriers of easily communicable diseases. Female flies collect pathogens on their legs and small hairs covering their bodies when they lay eggs on decomposing organic materials like feces, garbage, and animal corpses.

House flies can carry the following diseases:

  • Dysentery: an inflammation of the intestine causing diarrhea with blood
  • Salmonella: another intestinal disease where a person may develop diarrhea, fever, and abdominal cramps
  • Anthrax: a rare but serious illness with symptoms that range from skin sores to vomiting

Other diseases include typhoid fever, cholera, and tuberculosis.


Mosquitoes, together with house flies, are the most annoying flying pests which do not only live during the rainy seasons, but can also survive during summer.

Aside from malaria, dengue, and chikungunya, mosquito-borne diseases also include the following:

  • West Nile Virus (WNV): a disease where its patient will experience flu-like symptoms
  • La Crosse Encephalitis (LAC): a disease where people who acquired it will experience mild flu-like illnesses. In most severe cases, people with LAC experiences headache, fever, nausea, and lethargy, but may rapidly progress to disorientation, seizures, and comatose.
  • Jamestown Canyon Virus (JCV): symptoms of JCV include fever, headache, and flu-like symptoms (chills, malaise, and nausea). Severe cases include meningitis (inflammation of the membranes surrounding the brain) or encephalitis (inflammation of the brain)
  • Western Equine Encephalitis (WEE): this mosquito-borne disease has symptoms including fever, headache, stiff neck, vomiting, and lethargy which may progress into disorientation, irritability, seizures, and coma within two to four days. Unfortunately, there is no treatment for WEE other than the supportive care until the acute phase is over.
  • Eastern Equine Encephalitis (EEE): as compared to WEE, EEE is more common in children. Symptoms include headache, high fever, chills, and vomiting, which may progress into disorientation, seizures, and coma.
  • St. Louis Encephalitis (SLE): Symptoms for this disease include fever, headache, nausea, vomiting, and tiredness. Severe symptoms, which occur to older people, include encephalitis.



Cockroaches, just like the first two pests, are known to be dirty insects considering that they don’t mind walking on stools and garbage. They also technically live just anywhere – on fermenting products, septic dressings, feces, rotting food, and the list continues.

Just like house flies, one can acquire typhoid or dysentery when infected by cockroaches. Other diseases include the following:

  • Poliomyelitis: also known as polio
  • Gastroenteritis: a disease where the intestines are inflated, causing diarrhea and abdominal cramps.

Were we able to catch your attention? To prevent acquiring such diseases, it’ll be best to contact a reliable pest control company.

Related Post

One Reply to “The 3 Most Common Pests and the Diseases They Carry”

Leave a Reply

Your email address will not be published. Required fields are marked *