Posts Tagged Life cycle of West Nile Virus

The vicious cycle of West Nile Virus from the beginning to the end

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Mosquito Squad wants you to learn the facts about West Nile Virus."

As many of you already know West Nile Virus is a virus spread to humans and animals through the bite of a mosquito that has become infected with the virus through feeding off an infected bird.  The question is how does the infected bird become infected with West Nile in the first place?

The cycle of West Nile begins with a mosquito which transmits  the virus to a bird by way of the mosquito feeding from the bird, once the bird has become infected it serves as an amplifying host by developing levels of the virus that are sufficient enough to promote infection to other biting mosquitoes and thus pass it on to us  and other birds and animals through the bite of the infected mosquito that fed from the bird, which was already initially infected by a mosquito to begin with. Although quite confusing, the cycle is also complex, naming the mosquito the guilty party where all aspects of infection from West Nile are concerned. This vicious cycle carries out over and over again and amplifies the disease in birds. The disease was first identified in Uganda in  1937 and  since then has been commonly identified in the Middle eastern regions of the world, Africa and Western Asia. The virus had not been identified in the U.S. until an outbreak in New York in September, 1999. Since the New York outbreak more than 30,000 people have been reported with the virus and out of those 1,200 have perished from the virus. As of 2011 46 states have reported outbreaks of West Nile.

Blue Jays and crows are more likely to die from West Nile Virus than other birds.

Blue Jays and crows are more likely to die from West Nile Virus than other birds.

Many types of birds are likely to be infected with the West Nile Virus, but studies have shown that crows and blue jays are more likely to perish from the infection. In the 1999 New York area West Nile epidemic there was a huge die off of crows from the disease. Since this occurrence more than 200 species of birds found dead in the United States have tested positive for the virus. There is a detailed species list available through the CDC website that identifies the infected birds mortality rate from 1999 to present. You may visit here to view the list  http://www.cdc.gov/ncidod/dvbid/westnile/birdspecies.htm The identification of these species were reported thanks to the help of the public reporting cases of dead birds to their state and local health departments whom is responsible for collection and testing of dead birds all across the US.

Mosquito

The root of the West Nile epidemic lies in the mosquito.

Birds serve as vectors, or intermediate carriers for the disease from the minute the infected mosquito bites them. In many cases sick birds won’t show any sign of the virus and in other cases birds can just fall out of the sky dead from the virus. When a human becomes infected with the virus it can take on three forms, one of which is an asymptomatic  infection, the second is West Nile fever which is a mild febrile syndrome and the third is the most severe form of the virus which is called West Nile meningitis and West Nile encephalitis. Meningitis and encephalitis are neuroinvasive disorders which causes acute swelling of the membrane and lining of the brain and the brain itself.

Since there is no immunization for protecting us from West Nile the best way to lessen the chances of becoming infected with the virus is to minimize the risk of being bitten by an infected mosquito. Taking control of your property is key to controlling mosquito populations.

Here are some helpful hints to keep mosquitoes away…

  • Keep your property mowed and free of debris and brush piles.
  • Keep your bushes and plantings trimmed, tidy and avoid letting them get overgrown
  • Make sure gutters and downspouts are free of debris that might cause moisture to collect
  • Tip, toss out and turn over outdoor items that are not in use or those that may serve as reservoirs for moisture
  • Check screened areas for rips or tears frequently and repair immediately to avoid mosquitoes from entering your home
  • Frequently dump and refill bird baths or other areas where water can stand and serve as a place for mosquitoes to lay their eggs
  • Have you property treated by a licensed professionall to kill and control mosquitoes
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Mosquito Squad can help you take control of your property and keep it mosquito free.

Mosquito Squad is dedicated to keeping you and your family safe from mosquito-borne illnesses such as West Nile virus. Our safe and effective barrier spray , as well as out mosquito misting systems offer you outstanding mosquito control. Contact us today to learn more at 877-667-7823

804.353.6999 • info@mosquitosquad.com

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