Dengue is not outside the tropical zone, it is not a threat for international public health, ... For Europeans or people from North America, the threat for dengue is if you visit (Asia), while with avian influenza if it mutates it will immediately be a threat for every household in the world.  -   Hans Troedsson     Quotes
Dengue is not outside the tropical zone, it is not a threat for international public health, ... For Europeans or people from North America, the threat for dengue is if you visit (Asia), while with avian influenza if it mutates it will immediately be a threat for every household in the world. Hans Troedsson
 Health