Dengue fever

It is a multi system disorder characterized in affected organs by a type of inflammation called granulomas (small rounded outgrowths made up of blood vessels, cells and connective tissues).It is an infectious disease mainly seen in the tropics and the subtropics just after the rainy seasons. This disease is caused by four related dengue viruses (DEN-1, DEN-2, DEN-3, and DEN-4) and are transmitted by the domestic day-biting mosquitoes, Aedes aegypti.

Dengue is known for the last 200 years and was initially called the break-bone fever. It has been reported since from Africa , Southeast Asia including China and India , Middle East , Caribbean and Central and South America , Australia , and the South and Central Pacific. It was thought that Aedes mosquitoes were successfully eradicated from the American countries during the 1960s and so the eradication programme was discontinued in the 1970s. This neglect was disasterous and now its distribution is far more widespread than it was then.