The Spread of Dengue Fever

Cases and spread of dengue fever is still worrying, the World Health Organization (WHO) stated the incidence of dengue fever has grown dramatically around the world in recent decades. Some 2.5 billion people – two fifths of the world's population – are now at risk from dengue fever. WHO currently estimates there may be 50 million dengue infections worldwide every year. In 2007 alone, there were more than 890 000 reported cases of dengue in the Americas, of which 26 000 cases were DHF. Its Really concern about the spread of dengue fever