A) 5 to 10 million
B) 15 to 20 million
C) 25 to 50 million
D) 50 to 100 million
The answer would be C. Currently there are 2.5 billion people about two fifths of the world’s population are now at risk of dengue fever. People who are currently affected with this fever is about 50 million people world-wide. The disease is now endemic in more than 100 countries in Africa, the Americas, the Eastern Mediterranean, South-east Asia and the Western Pacific . South-east Asia and the Western Pacific is most seriously affected.
Before 1970 only nine countries experiences the disease as epidemics. This number has increased more than 4 times by 1995.
The spread of dengue is mainly due to the geographic distributions of the virus by mosquitos. The rise of mosquito population is bringing greater amounts of numbers everyday.
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