Five facts about dengue fever

Five facts about dengue fever
Comment E-mail Print Share
First Published: Tue, Jul 24 2007. 12 28 AM IST
Updated: Tue, Jul 24 2007. 12 28 AM IST
Dengue fever is a flu-like disease that is spread by the bite of an infected mosquito. Unlike the mosquitoes that cause malaria, those carrying dengue bite during the day.
Four different, but related, viruses cause dengue fever. If you survive any one of them, you are immune to that virus for life. But there is evidence that you are more likely to die if infected again by any of the other three.
Although only a relatively small percentage of dengue infections end up being fatal, there is no known cure. More than 1,000 people have already died this year in Indonesia alone.
The illness has spread rapidly around the world in recent decades. Only a handful of nations had dengue fever epidemics before 1970. Now, the disease is endemic in more than 100 countries.
Dengue fever is most common in cities, and cases are almost never found in mountainous areas more than 4,000ft above sea level.
Comment E-mail Print Share
First Published: Tue, Jul 24 2007. 12 28 AM IST