Imported Dengue case

[eigoya]

There are four strains of Dengue. When you get one type you are immune to that type only, if bitten by another of the four strains you have much more serious symptoms. Last year, we had one type only, but since the recent one was imported, it was another type, so a real threat to to those who were sick last year.
Info about Dengue: http://www.denguevirusnet.com/dengue-virus.html