Did You Know Mosquitoes Can Be Dangerous?

We all love the spring and summer. Long days of sunshine and hours of enjoyment in our backyards. However, one part of summer can be a real mood killer: the invasion of mosquitoes. Mosquitoes are more than a simple nuisance—they can carry and facilitate the spread of dangerous and potentially deadly viruses. The Centers for Disease Control and Prevention urges that everyone take preventative measures to avoid mosquito bites.

Mosquito-Borne Viruses in the United States

Millions of people are threatened by the presence of mosquitoes. For some, a mosquito bite may result in a pesky, itchy mark. However, for others the consequences can be much worse. Mosquito-borne diseases such as West Nile virus and encephalitis can cause painful symptoms and even lead to death if left untreated. In fact, thousands of Americans are infected with the West Nile virus annually. The West Nile fever occurs in about 20 percent of those infected with the virus. Symptoms mimic the flu and the virus may go undetected. Common signs include fever, headache, body aches, fatigue, vomiting and diarrhea. Since 2001, approximately 1,200 people in the United States have died from the West Nile virus. Severe neurological complications from the West Nile virus occur when the virus causes inflammation in the brain and spinal cord.

St. Louis Encephalitis and Eastern Equine Encephalitis are very serious and potentially deadly diseases caused by mosquito bites. Both diseases are most often caused when mosquitoes feed on an infected bird and then transmit the virus to humans via bites. Eastern Equine Encephalitis is one of the deadliest mosquito-borne diseases with a fatality rate of 30 percent. Of those who do survive, over half have some form of severe mental disability or paralysis.

Threats Outside of the United States

In foreign countries and United States territories, such as the Virgin Islands and Puerto Rico, mosquitoes pose even a higher threat to human health. Four of the most serious and well-known viruses outside of the continental United States include:

  • Zika
  • Chikungunya
  • Dengue
  • Malaria


In February 2016, the World Health Organization declared the Zika virus a public health emergency. The Asian tiger mosquito has been linked to the spread of the Zika virus. Zika virus outbreaks typically have higher incidence rates in Central America, Asia and Africa. However, there have been cases of Zika in the United States. The Zika virus poses the biggest threat to pregnant women and women planning to get pregnant. Zika is linked to microcephaly, a very serious and often deadly birth defect that affects the brain. Since symptoms of Zika are not always apparent in women, blood tests are usually recommended to confirm infection.

See related: Stay Protected from the Zika Virus in Charlotte


According to the CDC, there have been over 2 million reported cases of the chikungunya virus worldwide. The disease is transmitted via mosquitoes and cases of the disease are most commonly reported in Asia, Africa and India. Symptoms include severe joint pain, fever, nausea, fatigue and skin eruptions. Complications are rare but can be deadly and include the potential for long-term joint pain, cardiovascular disease and neurological disorders.


Dengue is rare in the United States, but over a third of the world’s population resides in areas where the risk of infection is possible. Dengue does not spread from person to person as the infection is transmitted exclusively through mosquitoes. Dengue can cause symptoms such as high fever, muscle pain, rashes, joint aches, nausea and vomiting. Dengue becomes deadly when it turns into dengue hemorrhagic fever, a very serious condition that causes bleeding in the gums, under the skin and nose. Dengue shock syndrome leads to massive bleeding and can send a person into shock. Dengue is the leading cause of the death in the tropics.


Malaria is transmitted primarily through bites from the female Anopheles mosquito. According to the World Health Organization, there were 216 million cases of malaria in 2016 alone. Young children, pregnant women and those with compromised immune systems are at a high risk of contracting malaria. Initial symptoms include fever, headache and chills, but malaria can become deadly if not treated within 24 hours of infection.

Mosquitoes can be dangerous to pets as well. Mosquitoes spread heartworm, a very serious parasitic condition that can cause severe injury to a pet’s heart, lungs and arteries.

Although repellents can prevent mosquito bites to a degree, you really need to take steps to reduce the number of mosquitoes on your property. Mosquitoes breed in water and their populations can expand if there is standing water on your property. Carolina Pest Management works with homeowners throughout the Carolinas to drastically reduce the number of mosquitoes swarming their properties. We offer green mosquito control options, which are environmentally friendly and safe for children and pets. Contact Us to discuss ways we can help.