2009
09
Nov
Dengue and dengue hemorrhagic fever (DHF) result from infection by any of four serotypes of dengue viruses. Transmission occurs through the bite of infected Aedes mosquitoes, principally Aedes aegypti, which is also the principal urban vector of yellow fever. Hundreds of thousands of cases of dengue and DHF are reported each year in tropical regions of the Americas, Africa, Asia and Oceania. From 1980 through 1987, 879 632 cases of dengue Read the rest of this entry »