. >> david hamer environmentally ecologically, south florida is very much like puerto rico cuba, the other islands of the caribbean. there are winds that carry eggs and see seeds and plants, the boats, the airplanes, the human commerce that covers that tight sea is something that could easily spread a disease like this, isn't it? >> it is, yes, but as scott has said, dengue has landed in parts of key west and other areas, and in most of those outbreaks have been snuffed out fairly quickly, and there has been relatively little local transmission. i want to add a point about the vaccine, and that is, yes, it would be useful for select populations in high risk areas in the united states, but we have to think about travelers. we have a large population of the united states that travels to the caribbean and south south america and other parts of the world where this disease is being transmitted. if we had an effective vaccine we would be using it for the traveling population. >> it's one thing to go to key west, a pretty small community even if a popular one. but if a disease like this ge

with us, our guests. >> david hamer in a world where people spread disease the way they do in this new mobile way where sars was in toronto. h1n1 was in philadelphia in a matter of days after it broke out in a big farming area in mexico do we have to retry both our early warning symptoms which is incident intimately connected with the work that you do. >> i think that we do to an extent. i think that the bole epidemic has highlighted the need to have good procedures in place to track the disease. chikungunya presents a different kind of problem because it can spread fairly quickly as it has on the islands in the indian ocean, so we may need to change our symptoms in response. and our response needs to be timely in order to control the vector of the mosquito control that was described. >> amesh, we were talking earlier just how long this disease can stick with you and the possible really long-term effects of discomfort, pain, swelling of an arthritis-like condition for a long time. does that help us when we have to turn around and talk to the public about draining standing water in the