its a mosquito based illness, a friend of OH's said(when we lived in Glastonbury) "within a few years we will have malaria bearing mosquito's on the (somerset) levels", that was 10 years ago! i suspect they are already in this country by now.
another thing that climate change will be bringing, not only will parasites and fungi be more prevalent and harder to get rid of, but mosquito's will be a problem in a muhc wider area
Then we will authorise the use of DT. (or whatever it is) While the poor blacks die the environment cannot be risked but once a few rich white kids get it then we need to nuke the environmant for the cheeldren.