I was just reading about dengue fever in Singapore and thought I'd report here. They had an outbreak when I was there years and years ago, and they still have problems. Apparently it is more confined now, as they have made an effort to improve the drainage systems. I never worried about it because I spent so much time indoors during the day.

I have been reading, though, that the mosquito bites during the day, and likes to live in dark, shaded places. One forum poster recommended always wearing socks, closed shoes, and long pants on buses, because the mosquito likes the area under the seats!

I usually used repellent every day, but if I move there I'm not sure I'll want to do that for years.