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Where does Dengue Fever appear on the globe?
Written Global Distribution
The global popularity of dengue has grown in recent decades. ... Before 1970 only nine countries had experienced Dengue Haemorrhagic Fever outbreaks, a number that had increased more than four-fold by 1995.
Some 2500 million people — two fifths of the worlds population — are now at risk from dengue. Who currently estimates there may be 50 million cases of dengue infection worldwide every year.
In 2001 alone, there were more than 609,000 reported cases of dengue in America, of which 15,000 cases were Dengue Haemorrhagic Fever. This is greater than double the number of dengue cases, which were recorded in the same region in 1995. ... In 2001, Brazil reported over 390,000 cases including more than 670 cases of Dengue Haemorrhagic Fever.
The spread of dengue is recognized to expanding geographic distribution of the four dengue viruses and of their mosquito vectors, the most important of which is the mostly urban species Aedes aegypti. ...
How is Dengue Fever caused?
There are four different, but closely related, viruses, which cause dengue. ... Without a doubt, there is good evidence that chronological infection with different types increases the risk of the more serious disease known as dengue haemorrhagic fever (DHF). Dengue viruses are transmitted to humans through the bites of infective female Aedes mosquitoes. ... This is approximately the same time as they are experiencing fever.
Approximate Word count = 1163
Approximate Pages = 4.7
(250 words per page double spaced)
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