Singaporean Superheroes!

Singaporean Superheroes!Spotted this on a Bus Stop in Singapore. I was quite surprised because there dont seem to be any mosquitoes in Singapore so I wonder why they are bothered about Dengue. Unlike in India where you cant go outside between 5pm and 7pm without a Haz-Mat suit on, I have spent many an evening outdoors in Singapore and not been bitten once!

Maybe they are just extra careful?