Aedes aegypti mosquito
Aedes aegypti mosquitoCourtesy Photo courtesy Centers for Disease Control and Prevention
A re-emerging threat
Dengue fever is making a come back in South America and some fear it could become a problem again in the US as well. The year 2007 was an epidemic record-breaking year there was an 11% increase in reported dengue cases when comparing 2006 to 2007. Some even fear it could be spreading to the US. There was a recent article in the Los Angeles Times about it reappearing in the US.
What is dengue fever?
Dengue is a viral infection spread by the predominantly urban species Aedes aegypti mosquitoes. In recent years dengue has become a major international public health concern. Dengue is found in tropical and sub-tropical regions around the world, predominantly in urban and semi-urban areas.
Dengue fever is a severe, flu-like illness that affects infants, young children and adults, but seldom causes death. Dengue haemorrhagic fever is a potentially deadly complication that is characterized by high fever, haemorrhagic phenomena--often with enlargement of the liver--and in severe cases, circulatory failure.
Why is dengue making a come back?
Potential reasons include climate influences like global warming, El Niño / Southern Oscillation and La Niña, both of which influence the intensity and duration of the rainy seasons and hurricanes or induce intense droughts and damage to biodiversity. Another potential cause is population growth and increased opportunities for mosquitoes to breed.
On the other hand, micro factors exist that are dependent on the agent (virus) and the vector (mosquito)—which at times exhibits a growing resistance to insecticides—and the host, all of which closely influence the manifestation of the disease and its more serious forms.

Your Comments, Thoughts, Questions, Ideas

daniel's picture
daniel says:

The mosquito is trying to bite the person. The mosquite is trying to suck their blood.

posted on Sat, 01/19/2008 - 1:28pm
Anonymous's picture
Anonymous says:

yes i am scared of these things you can die, my friends cousins had this diciese and it is scary

posted on Tue, 02/19/2008 - 2:20pm
LEE's picture
LEE says:

So because of global warming and because of the warm air, the mosquitos are making a comeback and is sucking out peoples blood and making them sick? That's scary, it's almost like the West Nile Virus, making people sick, and some do die.

posted on Wed, 02/27/2008 - 10:09am
Anonymous's picture
Anonymous says:

There's a band called Dengue Fever -- Cambodian/Californian rock. Check 'em out.

posted on Thu, 02/28/2008 - 11:33am
nelson.robin's picture
nelson.robin says:

thats scary what if they were to make there way to the US thats would be messed up

posted on Thu, 03/06/2008 - 10:19am
Laurie's picture
Laurie says:

The dengue outbreak in RIO DE JANEIRO is getting worse. The military has been called in for help.
From an article in the Washington Post:

Officials confirmed Tuesday that 67 people have died here from the mosquito-borne virus. Tens of thousands of people have been sickened, and many of the most serious cases -- including the majority of the fatalities -- have been children.

Check out the full article for more details. It sounds like they need some basic infrastructure before this outbreak will be controlled.

posted on Thu, 04/03/2008 - 2:56pm
hawa's picture
hawa says:

mosquitos are one of the most dangerious insect in the world especially when the area is dirty and with dirty water all over the place, bushes grass.

posted on Thu, 04/17/2008 - 1:23pm

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